1. Nursing and Midwifery Care Research Center, School of Nursing and Midwifery, Tehran University of Medical Sciences , , Tehran , Iran
2. Department of Gerontology, University of Social Welfare and Rehabilitation Sciences , , Tehran , Iran
3. International Research Centre "Biotechnologies of the Third Millennium", St. Petersburg, Russian Federation. Laboratory of Neuroendocrinology, ITMO University, I.P. Pavlov Institute of Physiology RASci. , St. Petersburg , Russian Federation
4. School of Nursing and Midwifery, Tehran University of Medical Sciences , , Tehran , Iran
5. Nursing and Midwifery Care Research Center, Tehran University of Medical Sciences , Tehran , Iran
6. Breastfeeding Research Center-Family Health Institute, Tehran University of Medical Sciences , Tehran , Iran
7. Social Determinants of Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences , Sanandaj , Iran
8. School of Public Health Iran University of Medical Sciences (IUMS) , , Tehran , Iran
9. Social Determinants of Health Research Center, Clinical Care Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Kurdistan University of Medical, Sciences , Sanandaj , Iran
10. Department of Women, Children, and Family Health Science, College of Nursing, University of Illinois at Chicago , Chicago, IL , USA
11. Department of Obstetrics and Gynecology, University Hospitals Schleswig-Holstein , Kiel , Germany