1. PhD Candidate, Students’ Research Office, Nursing and Midwifery Faculty, Shahid Beheshti University of Medical Sciences, Tehran, Iran;
2. PhD Candidate, Department of Midwifery and Reproductive Health, Nursing and Midwifery Faculty, Shahid Beheshti University of Medical Sciences, Tehran, Iran;
3. MS of Midwifery, Students’ Research Office, Nursing and Midwifery Faculty, Shahid Beheshti University of Medical Sciences, Tehran, Iran