1. Department of Biostatistics, Research Center of Fertility and Infertility, Shiraz University of Medical Sciences School of Medicine, Shiraz, Iran.
2. Health Policy Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
3. Department of Biostatistics, Jahrom University of Medical Sciences, Jahrom, Iran.
4. Ministry of Health and Medical Education, Women's Affairs Office, Tehran, Iran.