1. Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
2. Nursing and Midwifery Care Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
3. Department of Nursing, Esfarayen Faculty of Medical Sciences, Esfarayen, Iran
4. Department of Obstetrics and Gynecology, Faculy of Medicine, Mashhad University of Medical Science, Mashhad, Iran