[1] Debremarkos Univ, Sch Med, Dept Obstet & Gynecol, Debremarkos, Ethiopia
[2] St Pauls Hosp, Millennium Med Coll, Dept Obstet & Gynecol, Reprod Endocrinol & Infertil, Addis Ababa, Ethiopia
[3] St Pauls Hosp, Millennium Med Coll, Dept Publ Hlth, Field Epidemiol, Addis Ababa, Ethiopia
[4] St Pauls Hosp, Millennium Med Coll, Dept Obstet & Gynecol, Addis Ababa, Ethiopia
[5] Debremarkos Comprehens Specialized Hosp, Dept Midwifery, Debremarkos, Ethiopia
[6] Gondar Univ, Coll Med & Hlth Sci, Sch Med, Gondar, Ethiopia