Users Online: 1698
Home Print this page Email this page
Home About us Editorial board Search Browse articles Submit article Ahead of Print Instructions Subscribe Contacts Special issues Login 

Previous article Browse articles Next article 
Adv Biomed Res 2023,  12:68

The impact of individual factors on health information-seeking behavior of infertile couples undergoing assisted reproductive technologies: Longo model

1 Department of Health Information Technology, School of Allied Medical Sciences, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
2 PhD in Information Sciences and Knowledge Studies, Fertility and Infertility Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
3 PhD in Information Sciences and Knowledge Studies, Shiraz University of Medical Sciences, Shiraz, Iran
4 Research Assistant Professor of Reproductive Biology Fertility and Infertility Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
5 Associate Professor of Information Studies, Sultan Qaboos University, Muscat, Oman

Date of Submission01-Jun-2022
Date of Acceptance12-Oct-2022
Date of Web Publication21-Mar-2023

Correspondence Address:
Dr. Masoomeh Latifi
PhD in Information Sciences and Knowledge Studies, Fertility and Infertility Research Center, Hormozgan University of Medical Sciences, Bandar Abbas
Login to access the Email id

Source of Support: None, Conflict of Interest: None

DOI: 10.4103/abr.abr_181_22

Rights and Permissions

Background: This study investigated the impact of individual factors on the Health information-seeking behavior (HISB) of infertile couples undergoing Assisted Reproductive Technologies (ART).
Materials and Methods: This applied study was done using the descriptive-analytical method. The population of the study remains to be infertile couples undergoing ART referred to a public Infertility Center and a private one in Bandar Abbas (capital of Hormozgan province, Southern Iran) in the summer of 2020. Using simple random sampling, 168 people were selected. The data collection tool was a questionnaire extracted from Longo HISB Model, used after validation and reliability. Data were analyzed by SPSS software using descriptive and inferential tests.
Results: The results showed that individual factors (gender, education, income, age, and cause of infertility) affect the HISB of infertile couples. Based on the analysis of variance, there was a significant difference between infertile couples concerning Passive Information Receipt (F = 2.688 and P = 0.048) so the couples with a male cause used Passive Information Receipt more.
Conclusions: Considering the results, it is necessary for the country's health system to take appropriate measures to provide an appropriate situation for better decision-making for infertile couples and improve the chances of fertility by reducing the existing inequalities to Active Information Receipt and quality health information.

Keywords: Health, information-seeking behavior, infertility

How to cite this article:
Alishan Karami N, Latifi M, Berahmand N, Eini F, Al-Suqri MN. The impact of individual factors on health information-seeking behavior of infertile couples undergoing assisted reproductive technologies: Longo model. Adv Biomed Res 2023;12:68

How to cite this URL:
Alishan Karami N, Latifi M, Berahmand N, Eini F, Al-Suqri MN. The impact of individual factors on health information-seeking behavior of infertile couples undergoing assisted reproductive technologies: Longo model. Adv Biomed Res [serial online] 2023 [cited 2023 Jun 7];12:68. Available from:

  Introduction Top

Infertility is defined as not being able to conceive after at least 1 year of unprotected intercourse and without using contraceptive methods.[1] Having been a global issue, infertility has been taking an increasing trend in recent years in most parts of the world.[2] According to the latest report of the World Health Organization, globally 15% of couples are infertile.[3] Being eager to become parents, the couples seek primary treatments for infertility including drug therapy and surgery.[4] Not getting the desired results, they usually turn to Assisted Reproductive Therapies/Technologies (ART) including the therapies leading to artificial insemination.[5]

Health information-seeking behavior (HISB) represents the purposeful behavior of individuals to obtain facts and satisfy health information needs. It also indicates how they search, find, and use information related to health conditions through various channels.[6] Moreover, research shows that individual factors including Social and Demographic characteristics, and psychological variables influence HISB.[7],[8] They play a significant role in addressing inequalities in accessing, searching, and processing health information, and also taking informed actions.[9] Various quantitative and qualitative studies addressed the health information-seeking of infertile couples under treatment. The areas of the research include information needs and counseling needs,[10],[11] online and face-to-face information search,[1],[12] information channels,[13],[14],[15],[16] the attitude of infertile couples toward health information-seeking,[17] goals and motivations for searching medical information in online resources,[18],[19] and the psychological aspects of infertility for acquiring information.[20] The results of research on HISB show that the individual (personal) factors/characteristics of the couples undergoing artificial insemination about the dimensions of HISB as a separate topic have been inadequately investigated. Hence, the knowledge gap in the field necessitates performing this independent study.

In health information behavior research, individual characteristics are addressed in two dimensions: (1) Social and Demographic characteristics (age, gender, income, education, job status, etc.), and (2) Psychological variables such as personality traits and expectations of Individuals, goals, beliefs, values, attitudes, emotions, skills, and/or the resources which can be explored.[8] Addressing the social and demographic characteristics, studies investigate the effects of moderators on HISB in different models and theories.[13],[14],[15],[21]

However, the present study uses the Longo model to evaluate the dimensions of HISB.[22] The most important features of this model compared to other health information-seeking models include the active and passive receipt of information and the impact of information on patients.[23] This model includes various themes including information receipt (active and passive), information sources, information impact, perception, interpersonal interaction, and information-searching behavior.[22] Studies used this model in different subjects including the HISB of diabetic patients,[23],[24] cancer patients,[6] and students.[25],[26] Given the above, this study is primarily to find the impact of individual factors (personal characteristics) on the themes of the HISB of infertile couples undergoing ART.

The infertility rate in Iran is reported to be 20.2%. In other words, one out of every five Iranian couples experience infertility.[27] One of the provinces of the country with a high rate of infertility is Hormozgan in the south of the country. This province is one of the least privileged provinces in Iran in terms of healthcare facilities. Moreover, there used to be no infertility centers in the province before 2018.[28] Therefore, identifying the health information behavior of infertile couples undergoing treatment in this geographic area could be used as scientific evidence for the decision-making concerning the health and treatment of infertile couples undergoing ART treatment. The findings might also have global implications for research in the HISB of infertile couples undergoing ART treatment. Moreover, since further development of infertility health and clinical interventions requires the participation of stakeholders (infertile couples under treatment), the results of this study could also be important for the stakeholders of the reproductive health community to participate in the process of HISB and to fill important gaps.

  Materials and Methods Top

Study design

This descriptive-analytical study is an applied work in terms of purpose. Data were collected using a questionnaire developed based on the Longo Health Information Behavior Model. There were 24 items addressing the impact of individual characteristics on HISB.[22]

The questionnaire included two main parts: Demographic information including age, gender, income, education level, and cause of infertility; and HISB themes including (I) Information Receipt (6 items: 3 for Active Information Receipt and 3 for Passive Information Receipt), (II) Information Resources (17 items: 6 for Obtaining Information from People, 7 for Obtaining Information from Traditional Media, and 4 items about Obtaining Information from New Media), (III) Impact of Health Information on Patients (4 items about the Impact of Information on the Treatment Process and 3 items for Stress), and (IV) Perception, Interpersonal Interactions, and Seeking Information Behavior (16 items: 5 about Perception in Search of Information, 6 about Behavior in Search of Information, and 5 about Interpersonal Interaction in Search of Information). The responses were measured on a five-choice Likert scale ranging from 4 (very high) to 0 (not at all).

The validity of the questionnaire was confirmed by five experts in information science, and five gynecologists and infertility specialists (CVR's Value: 0.83). To determine the clarity of the items, the questionnaire was distributed among 30 members of the target community. Then, each item was reviewed from the viewpoint of clarity and understandability. Next, the necessary corrections were made. Finally, the face validity of the items was calculated as 81.1 using the Impact of items formula.

To calculate the reliability of the questionnaire, we used the questionnaire's themes. Therefore, Cronbach's alpha for “Information Receipt,” “Information Resources,” “Impact of Health Information on Patients,” and “Interpersonal Interaction in Search of Information” were 0.874, 0.836, 0.881, and 0.798, respectively.

Sampling strategy and sample size

The study population consisted of 149 infertile couples with primary infertility (298 cases) referring to two infertility centers in Hormozgan province in the summer of 2020: Center-A, 204 couples referred to a public center affiliated to Hormozgan University of Medical Sciences (HUMS), and Center-B, 94 couples were referred to a private center affiliated with Umm-e-Leila hospital. According to Cochran's table (95% CI, SD 0.5, and margin of error of 5%), using a random sampling method, 168 people (Center A: 114 cases (74 couples), and Center B: 54 cases (27 couples)) were selected. In other words, 60% of the cases were chosen from the public infertility treatment (Center A, more referrals) and 40% from the private infertility treatment (Center B, less referrals). Attempts were made to have samples with maximum diversity (in terms of gender, age, level of education, income level, and cause of infertility).

Statistical analysis

Data analysis was performed using the SPSS statistics software package version 23. The normality of the data was assessed using the Kolmogorov–Smirnov test. Data were analyzed at two levels of descriptive statistics (frequency distribution, mean and standard deviation) and inferential statistics (Pearson and Spearman correlation test, independent t-test, and multivariate analysis of variance). The significance level was considered P ≤ 0.05.

Ethical considerations

This research was approved by the ethics committee of HUMS and the assigned code was IR.HUMS.REC.2019.017. Moreover, the principles of ethics in research including informed written consent, anonymity, confidentiality, and the right of participants to leave the research were considered. The title and objectives of the study were clearly explained at the beginning of the questionnaire.

  Results Top

In this study, the mean age of women was 32.7 ± 3.7 years old while men aged 35 ± 6.5 years on average. Males with academic degrees (27.3%) outnumbered females (20.6%). Other participants had a high-school diploma or lower education. Most of the men (64.3%) had low incomes. The primary cause of infertility with regard to gender was observed in females (41.2%). Only 23.6% of males were the cause of infertility [Table 1].
Table 1: Demographic characteristics of study participants (n=168)

Click here to view

HISB was examined in four themes (10 components). Comparing the components of HISB with regard to gender, an independent t-Test revealed a significant difference between men and women in the component of “Behavior in Search of Information” (P < 0.001). The average score of women for this component was higher [Table 2].
Table 2: The relationship of gender with HISB of infertile couples undergoing treatment

Click here to view

Regarding education, using the Pearson correlation coefficient, we found a direct significant relationship for most of the HISB's components except for “Perception in Search of Information” (P < 0.531, r = 0.06). Moreover, the analysis of the HISB's components regarding monthly income revealed a significant direct relationship for all the components except “Behavior in Search of Information” (P < 0.780, r = 0.04), and “Perception in Search of Information” (P < 0.341, r = 0.05) [Table 3].
Table 3: The relationship between level of education, income and age with the HISB

Click here to view

Regarding age, using the Pearson correlation coefficient, the results indicated a significant reverse relationship for most of the HISB's components except for “Impact of Information on the Treatment Process” (P < 0.137, r = 0.09), “Perception in Search of Information” (P < 0.451, r = 0.05), and “Stress” (R < 0.759, r = 0.13) [Table 3].

The results of the multivariate analysis of variance (MANOVA) showed that the significance level of one of the tests (Roy's largest root) was less than 0.05 [Table 4]. Therefore, there was a significant difference between couples with various causes of infertility from the viewpoint of at least one of the dependent components of HISB.
Table 4: Summary of multivariate analysis of variance between causes of infertility and HISB

Click here to view

To be more precise, a one-way analysis of variance in the MANOVA context was carried out on the dependent component. This analysis showed the couples maintained a significant difference in the “Passive Information Receipt” component (P = 0.048, F = 2.688). No other significant differences were detected in the components. To further understand the difference, an investigation of the average of the mentioned component in different groups of couples with the cause of infertility showed that men were inclined toward “Passive Information Receipt” more [Table 5].
Table 5: One-way analysis of variance for investigation of the averages

Click here to view

  Discussion Top

This study uses the Longo model as its conceptual framework to investigate the individual factors influencing the HISB of infertile couples undergoing ART. The results confirmed that individual factors including gender, education, income, age, and cause of infertility were influential on their HISB. The mean of all the HISB components in women was higher than in men. In fact, women were more likely to take responsibility for reproductive health information-seeking because they naturally and socially believe in pregnancy and motherhood as gender-specific roles.[13] Hence, women seek health information related to infertility treatment more actively. Several earlier studies reported that women compared to men had more information about reproductive health. This may explain why they search, receive, and use health information more.[10],[11],[17] Previous studies also confirmed the assumptions that women were more likely to seek information and improve fertility chances via online resources.[16],[23]

We also showed that the HISB of infertile couples was inversely affected by the level of education and income. Couples with a higher level of education and income showed higher demand for searching and receipt of information from various information sources. Since studies about social categories reported similar findings in different parts of the world, it could be concluded that this is a global health issue.[9],[29] Moreover, many studies reported an inclined situation in HISB. That is, people from lower classes of society (in terms of education and income) are less active in seeking information, although they need more information compared to those in higher classes.[17],[24],[26],[30] A study in Saudi Arabia found that infertile couples with a low level of education were less likely to accept ART.[31] Satir and Kavlak (2017) reported that infertile women with a higher level of education demonstrated a higher level of ability and skill for receipt and search for fertility information from online resources. They also made correct and informed decisions in critical and stressful situations.[19] Another influencing factor for information-seeking addressed in earlier studies is income.[26] People with a lower level of economic status are less likely to seek information.[7],[9],[22],[32] Moreover, an experimental study reported HISB in lower-income people was significantly less than in people with a higher level of income.[15] However, most of the cases in our study were from a lower level in terms of income. They reported inappropriate economic status that can justify the results of our study.

Age also affected the components of HISB. A study from the United States reported that younger people were four times more likely to actively seek health information from web-based resources compared to middle-aged ones.[33] Deeks et al.[14] also reported that HISB decreases with age. Moreover, some studies reported that infertile people are less likely to try to participate in the process of treatment with age.[5],[34] This may justify why the chances of fertility reduce when people grow older. However, some other studies ignoring age stated the participation of infertile couples in choosing the treatment method as the most important objective and motivation for seeking information in online resources.[9],[35] Findings of some studies showed that counseling methods (group counseling, cognitive behavioral therapy, group psychotherapy) and applied techniques in changing thoughts, attitudes, and beliefs as a complement to infertility treatments can play an important role in reducing stress, frustration, improve the couple's mental health, and participate in treatment.[36],[37]

The cause of infertility was also a determining individual factor in HISB. Infertility with male cause showed a significant difference with the component of “Passive Information Receipt.” This can be explained by the fact that male infertility evokes an attack on male emotions[34] which in turn affects active or passive information receipt.[38] Therefore, HISB is led to passive information receipt in infertility with male cause. Miner et al.[18] (2019) reported that infertile men were less inclined to talk, discuss, and receive information about their disease compared to men with cancer. Another study also stated that men did not have a positive attitude toward seeking and receiving health information.[17],[19],[34]

Unlike Longo's model for HISB in which “Active Information Receipt” from information resources increases patients' knowledge and awareness about the disease from which they are suffering; and in turn, it causes effective participation of the patient in the treatment,[22] this study revealed no significant correlation between other components of HISB regarding the cause of infertility. This could be important in HISB due to two main reasons: (1) the cause of infertility and (2) the perceived risk of losing the chance of fertility.

One of the limitations of the present study was the location of the research. This study was carried out in Hormozgan which is known as one of the least privileged provinces of the country in terms of access to medical services and interventions for reproductive health. Hence, performing a similar study in other settings would allow the comparison of other studies with the findings of the present work. Another limitation of the research is the small sample size. Doing research with a larger sample size is likely to yield more accurate results.

  Conclusion Top

This study reported the relationship between individual factors affecting HISB of infertile couples undergoing ART for the first time. Although women were more active in seeking health information than men, HISB was also influenced by the couples' level of education, income, and age. Male infertility also affected men's “Passive Information Receipt.” Therefore, the findings of this study highlight the special attention to be paid to individual factors by reproductive health centers and associations to solve the issues in the HISB. Moreover, this study indicates the need to provide the necessary context for “Active Information Receipt” to seek, understand, and use the information to facilitate health-promoting behaviors.

Declaration of patient consent

The authors certify that they have obtained all appropriate patient consent forms. In the form, the patient(s) has/have given his/her/their consent for his/her/their images and other clinical information to be reported in the journal. The patients understand that their names and initials will not be published and due efforts will be made to conceal their identity, but anonymity cannot be guaranteed.


We would like to express our gratitude to the authorities and personnel of the clinics as well as the couples who participated in the study.

Financial support and sponsorship

This study was funded by the Hormozgan University of Medical Sciences.

Conflicts of interest

There are no conflicts of interest.

  References Top

Ehsan Z, Yazdkhasti M, Rahimzadeh M, Ataee M, Esmaelzadeh-Saeieh S. Effects of group counseling on stress and gender-role attitudes in infertile women: A clinical trial. J Reprod Infertil 2019;20:169-77.  Back to cited text no. 1
Mann U, Shiff B, Patel P. Reasons for worldwide decline in male fertility. Curr Opin Urol 2020;30:296-301.  Back to cited text no. 2
Pushpalatha D, Tamaskar S, Sundaram. Evaluation of sperm DNA abnormality index as a indicator of male infertility. Int J Clin Diagn Pathol 2021;4:102-7.  Back to cited text no. 3
Macaluso M, Wright-Schnapp TJ, Chandra A, Johnson R, Satterwhite CL, Pulver A, et al. A public health focus on infertility prevention, detection, and management. Fertil Steril 2010;93:16:e1-10.  Back to cited text no. 4
Massarotti C, Gentile G, Ferreccio C, Scaruffi P, Remorgida V, Anserini P. Impact of infertility and infertility treatments on quality of life and levels of anxiety and depression in women undergoing in vitro fertilization. Gynecol Endocrinol 2019;35:485-9.  Back to cited text no. 5
Zimmerman MS, Shaw G Jr. Health information seeking behaviour: A concept analysis. Health Info Libr J 2020;37:173-91.  Back to cited text no. 6
Chang C-C, Huang M-H. Antecedents predicting health information seeking: A systematic review and meta-analysis. Int J Inf Manage 2020;54:102115.  Back to cited text no. 7
Lambert SD, Loiselle CG. Health information—seeking behavior. Qual Health Res 2007;17:1006-19.  Back to cited text no. 8
Nölke L, Mensing M, Krämer A, Hornberg C. Sociodemographic and health-(care-) related characteristics of online health information seekers: A cross-sectional German study. BMC Public Health 2015;15:1-12.  Back to cited text no. 9
Jafarzadeh-Kenarsari F, Ghahiri A, Zargham-Boroujeni A, Habibi M. Exploration of the counseling needs of infertile couples: A qualitative study. Iran J Nurs Midwifery Res 2015;20:552.  Back to cited text no. 10
Zagami SE, Roudsari RL, Janghorban R, Bazaz SMM, Amirian M, Allan HT. Infertile couples' needs after unsuccessful fertility treatment: A qualitative study. J Caring Sci 2019;8:95.  Back to cited text no. 11
Talarczyk J, Hauke J, Poniewaz M, Serdyńska-Szuster M, Pawelczyk L, Jedrzejczak P. Internet as a source of information about infertility among infertile patients. Ginekol Pol 2012;83:250-4.  Back to cited text no. 12
Bennett LR, Wiweko B, Bell L, Shafira N, Pangestu M, Adayana IP, et al. Reproductive knowledge and patient education needs among Indonesian women infertility patients attending three fertility clinics. Patient Educ Couns 2015;98:364-9.  Back to cited text no. 13
Deeks A, Lombard C, Michelmore J, Teede H. The effects of gender and age on health related behaviors. BMC Public Health 2009;9:213.  Back to cited text no. 14
Dyer SJ, Patel M. The economic impact of infertility on women in developing countries-a systematic review. Facts Views Vis Obgyn 2012;4:102.  Back to cited text no. 15
Kahlor L, Mackert M. Perceptions of infertility information and support sources among female patients who access the Internet. Fertil Steril 2009;91:83-90.  Back to cited text no. 16
Abolfotouh MA, Alabdrabalnabi AA, Albacker RB, Al-Jughaiman UA, Hassan SN. Knowledge, attitude, and practices of infertility among Saudi couples. Int J Gen Med 2013;6:563-73.  Back to cited text no. 17
Miner SA, Daumler D, Chan P, Gupta A, Lo K, Zelkowitz P. Masculinity, mental health, and desire for social support among male cancer and infertility patients. Am J Mens Health 2019;13:1557988318820396.  Back to cited text no. 18
Satir DG, Kavlak O. Use of the internet related to infertility by infertile women and men in Turkey. Pak J Med Sci 2017;33:265-9.  Back to cited text no. 19
Fisher JR, Hammarberg K. Psychological and social aspects of infertility in men: An overview of the evidence and implications for psychologically informed clinical care and future research. Asian J Androl 2012;14:121-9.  Back to cited text no. 20
Marton C, Choo CW. A review of theoretical models of health information seeking on the web. Journal of Documentation 2012;68:330-52.  Back to cited text no. 21
Longo DR, Schubert SL, Wright BA, LeMaster J, Williams CD, Clore JN. Health information seeking, receipt, and use in diabetes self-management. Ann Fam Med 2010;8:334-40.  Back to cited text no. 22
Lalazaryan A, Zare-Farashbandi F. A review of models and theories of health information seeking behavior. Int J Health Syst Disaster Manag 2014;2:193-203.  Back to cited text no. 23
Zare-Farashbandi F, Lalazaryan A, Rahimi A, Hasssanzadeh A. The effect of contextual factors on health information–seeking behavior of Isfahan diabetic patients. J Hosp Librariansh 2016;16:1-13.  Back to cited text no. 24
Yilma TM, editor Health information seeking behavior among college students: A case in a developing country. Proceedings of the 2016 ACM on Conference on Human Information Interaction and Retrieval, Vienna, Austria. 2016.  Back to cited text no. 25
Yilma TM, Inthiran A, Reidpath D, Orimaye SO, editors. Health information seeking and its associated factors among university students: A case in a middle-income setting. Pacific Asia Conference on Information Systems (PACIS); 2017: Association For Information Systems.  Back to cited text no. 26
Akhundi MM. Infertility in Iran Pana News Agency 2021. Available from:  Back to cited text no. 27
Mir SA, Khosravi S, Mansouri Bidkani M, Khosravi AA. Expanding the health care in deprived areas in Iran: Policies and challenges . J Mil Med 2019; 21(4):342-352.  Back to cited text no. 28
Siegrist K. Sozioökonomischer Status und Gesundheitsverhalten. PiD-Psychotherapie im Dialog 2008;9:382-6.  Back to cited text no. 29
Gavgani VZ, Qeisari E, Jafarabadi MA. Health information seeking behavior (HISB): A study of a developing country. Health 2013;2:1-2013.  Back to cited text no. 30
Almaslami F, Aljunid SM, Ghailan K. Demographic determinants and outcome of in vitro fertilization (IVF) services in Saudi Arabia. J Int Med Res 2018;46:1537-44.  Back to cited text no. 31
Ombelet W. Reproductive healthcare systems should include accessible infertility diagnosis and treatment: An important challenge for resource-poor countries. Int J Gynecol Obstet 2009;106:168-71.  Back to cited text no. 32
Otte-Trojel T, De Bont A, Van De Klundert J, Rundall TG. Characteristics of patient portals developed in the context of health information exchanges: Early policy effects of incentives in the meaningful use program in the United States. J Med Internet Res 2014;16:e258.  Back to cited text no. 33
Ravitsky V, Kimmins S. The forgotten men: Rising rates of male infertility urgently require new approaches for its prevention, diagnosis and treatment. Biol Reprod 2019;101:872-4.  Back to cited text no. 34
Slauson-Blevins KS, McQuillan J, Greil AL. Online and in-person health-seeking for infertility. Soc Sci Med 2013;99:110-5.  Back to cited text no. 35
Gameiro S, Boivin J, Dancet E, de Klerk C, Emery M, Lewis-Jones C, et al. ESHRE guideline: Routine psychosocial care in infertility and medically assisted reproduction—A guide for fertility staff. Hum Reprod 2015;30:2476-85.  Back to cited text no. 36
Zurlo MC, Cattaneo Della Volta MF, Vallone F. Infertility-related stress and psychological health outcomes in infertile couples undergoing medical treatments: Testing a multi-dimensional model. J Clin Psychol Med Settings 2020;27:662-76.  Back to cited text no. 37
Kuhlthau CC. Inside the search process: Information seeking from the user's perspective. J Am Soc Inf 1991;42:361-71.  Back to cited text no. 38


  [Table 1], [Table 2], [Table 3], [Table 4], [Table 5]


Previous article  Next article
Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
Access Statistics
Email Alert *
Add to My List *
* Registration required (free)

  In this article
Materials and Me...
Article Tables

 Article Access Statistics
    PDF Downloaded25    
    Comments [Add]    

Recommend this journal