1. Department of Obstetrics & Gynecology, Iran University of Medical Sciences, Akbarabadi Teaching Hospital, Tehran, Iran;
2. Obstetrics & Gynecologic Research Center of Akbarabadi Teaching Hospital, Tehran University of Medical Sciences, Tehran, Iran;
3. Medical Student Research Committee (MSRC), Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran;
4. Medical Student Research Committee, Urmia University of Medical Sciences, Urmia, Iran;
5. Faculty of Medicine, University of Exeter, Exeter, UK