[1] Tabriz Univ Med Sci, Fac Nursing & Midwifery, Dept Midwifery & Reprod Hlth, Tabriz, Iran
[2] Shahid Beheshti Univ Med Sci, Fac Nursing & Midwifery, Dept Midwifery & Reprod Hlth, Tehran, Iran
[3] Shahid Beheshti Univ Med Sci, Res Ctr Safe Motherhood, Dept Midwifery & Reprod Hlth, Tehran, Iran
[4] Shahid Beheshti Univ Med Sci, Res Inst Endocrine Sci, Reprod Endocrinol Res Ctr, Tehran, Iran
[5] Shahid Beheshti Univ Med Sci, Dept Biostat, Tehran, Iran
[6] Colorado State Univ, Dept Educ, Ft Collins, CO 80523 USA