1. National Center for Health Insurance Research, Tehran, Iran
2. Health Human Resources Research Center, School of Health Management and Information Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
3. Student Research Committee, School of Health Management and Information Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
4. School of Medicine, Dezful University of Medical Sciences, Dezful, Iran
5. Department of Obstetrics and Gynecology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
6. Emergency Medicine Research Center, Shiraz University of Medical Sciences, Shiraz, Iran