[1] Dept Obstet & Gynaecol, Queen Loziba Thebe Matern Wing,POB 2096,Vera Rd, Bulawayo, Matabeleland, Zimbabwe
[2] Royal Womens Clin, Bulawayo, Matabeleland, Zimbabwe
[3] Natl Univ Sci & Technol, Med Sch, Bulawayo, Matabeleland, Zimbabwe
[4] Mpilo Hosp, Dept Obstet & Gynaecol, Queen Loziba Thebe Matern Wing, Bulawayo, Matabeleland, Zimbabwe
[5] Coombe Women & Infants Univ Hosp, Dept Masters Projects, Dublin, Ireland
[6] Univ Cape Town, Cape Town, South Africa