1. School of Nursing and Midwifery, Guilan University of Medical Sciences, Rasht, Iran
2. Reproductive Epidemiology Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
3. Metabolic Diseases Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
4. Department of Biostatistics and Epidemiology, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
5. Department of Epidemiology, School of Health, Arak University of Medical Sciences, Arak, Iran
6. Department of Biostatistics, Faculty of Paramedical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
7. Department of Health Services Research, Institute of Psychology, Health, and Society, University of Liverpool, Liverpool, UK
8. Department of Medical Ethics and Law, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran