1. Department of Community Medicine, Faculty of Clinical Sciences, Bowen University Teaching Hospital, P.O. BOX 15, Ogbomoso 210251, Oyo State, Nigeria
2. Department of Community Health, Obafemi Awolowo University Teaching Hospital, Ile-Ife 220001, Osun State, Nigeria
3. Department of Community Health, Ondo State Specialist Hospital, PMB 603, Ondo State, Nigeria
4. Department of Obstetrics and Gynaecology, Bowen University Teaching Hospital, P.O. BOX 15, Ogbomoso 210251, Nigeria