1. Department of Obstetrics and Gynecology, School of Medicine , Mazandaran University of Medical Sciences , Sari , Iran
2. Resident of Anaesthesiology , Mazandaran University of Medical Science , Sari , Iran
3. Student Research Committee , Mazandaran University of Medical Science , Sari , Iran
4. Student Research Committee , Hormozgan University of Medical Science , Bandar Abbas , Iran
5. Resident of Obstetrics & Gynaecology , Mazandaran University of Medical Science , Sari , Iran