1. Department of Reproductive Health , School of Nursing and Midwifery , Shahroud University of Medical Sciences , Shahroud , Iran
2. Midwifery and Reproductive Health Research Center , School of Nursing and Midwifery , Shahid Beheshti University of Medical Sciences , Tehran , Iran ; and Intersection of Niayesh, In Front of Shahid Rajaee Heart Hospital , Faculty of Nursing and Midwifery , Vali-e-Asr St. , Tehran , Iran
3. Department of Midwifery and Reproductive Health , School of Nursing and Midwifery , Shahid Beheshti University of Medical Sciences , Tehran , Iran