1. Department of Obstetrics and Gynecology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran;
2. Pharmacological Research Center of Medical Plants, Mashhad University of Medical Sciences, Mashhad, Iran;
3. Research Committee of Department of Midwifery and Reproductive Health, Nursing and Midwifery School, Mashhad University of Medical Science, Mashhad, Iran;
4. BC of Anesthesiology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran