[1] Natl Univ Malaysia UKM, Fac Med, Dept Obstet & Gynaecol, Jalan Yaacob Latif,Bandar Tun Razak, Kuala Lumpur 56000, Malaysia
[2] Natl Univ Malaysia UKM, Fac Med, Dept Paediat, Jalan Yaacob Latif,Bandar Tun Razak, Kuala Lumpur 56000, Malaysia
[3] Natl Univ Malaysia UKM, Fac Med, Dept Community Hlth, Jalan Yaacob Latif,Bandar Tun Razak, Kuala Lumpur 56000, Malaysia
[4] Int Islamic Univ Malaysia, Dept Obstet & Gynaecol, Kulliyyah Med, Indera Mahkota Campus, Kuantan 25200, Pahang, Malaysia
[5] Univ Nairobi, Kenyatta Natl Hosp, Dept Obstet & Gynecol, Div Surg, Nairobi, Kenya