1. School of Nursing and Midwifery, Iran University of Medical Sciences, Tehran, Iran;
2. Department of Obstetrics & Gynecology, Iran University of Medical Sciences, Akbarabadi Teaching Hospital, Tehran, Iran;
3. Research Center of Clinical Trials in Traditional Medicine, Shahed University, Tehran, Iran;
4. Faculty of Management, Iran University of Medical Sciences, Tehran, Iran;
5. Faculty of Medicine, University of Southampton, Southampton, UK