1. Department of Obstetrics and Gynecology, Emam Hospital, Tehran University of Medical Sciences and Health Services, Tehran, Iran.
2. Department of Obstetrics and Gynecology, Fatemieh Hospital, Hamadan University of Medical Sciences and Health Services, Hamadan, Iran.
3. Department of Clinical Nutrition, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran.
4. Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran.