1. Department of Reproductive Health, Student Research Committee, Faculty of Nursing and Midwifery, Mashhad University of Medical Science, Mashhad, Iran.
2. Department of Public Health, Torbat Heydarieh University of Medical Sciences, Torbat Heydarieh, Iran.
3. Nursing and Midwifery Care Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
4. Department of Midwifery, Mashhad University of Medical Sciences, School of Nursing and Midwifery, Mashhad, Iran.