1. Department of Obstetrics and Gynecology, Faculty of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
2. Department of Obstetrics and Gynecology, Isfahan University of Medical Sciences, Isfahan, Iran
3. Department of Obstetrics and Gynecology, Fetal Medicine Unit, Isfahan University of Medical Sciences, Isfahan, Iran
4. Department of Epidemiology and Biostatistics, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
5. Department of Obstetrics and Gynecology, School of Medicine, Shahrekord University of Medical Sciences, Shahrekord, Iran