1. Department of Midwifery and Reproductive Health, School of Nursing and Midwifery, Shahid Beheshti University of Medical Sciences, Iran
2. Associate professor, Midwifery and Reproductive Health Research Center, Department of Midwifery and Reproductive Health, School of Nursing and Midwifery, Shahid Beheshti University of Medical Sciences, Iran
3. Assistant professor, Department of Midwifery and Reproductive Health Faculty of Nursing and Midwifery School, Shahid Beheshti University of Medical Sciences, Iran
4. Assistant Professsor, Department of Biostatistics, School of Paramedical Sciences, Shahid Beheshti University of Medical Sciences, Iran