1. Department of Reproductive Health, School of Nursing and Midwifery affiliated to Tehran university of Medical Sciences, Tehran, Iran
2. Department of Midwifery, School of Nursing and Midwifery, Ilam University of Medical sciences, Ilam, Iran
3. Department of Midwifery, School of Nursing and Midwifery, Shiraz University of Medical Sciences, Shiraz, Iran