1. Department of Obstetrics & Gynecology, Faculty of Medicine, Sabzevar University of Medical Sciences, Sabzevar, Iran
2. Department of Midwifery, Sabzevar University of Medical Sciences, Sabzevar, Iran
3. Department of Internal Medicine, Ghazvin University of Medical Sciences, Ghazvin, Iran
4. Department of Biostatistics and Health, Sabzevar University of Medical Sciences, Sabzevar, Iran