1. Department of Obstetrics and Gynecology, College of Medicine, Pan African University Life and Earth Sciences Institute (Including Health and Agriculture), University of Ibadan, Ibadan, Nigeria
2. Field Epidemiology Training Program, Ministry of Health, Ethiopia
3. Department of Obstetrics and Gynecology, College of Medicine, University of Ibadan, Ibadan, Nigeria
4. Addis Continental Institute of Public Health, Addis Ababa, Ethiopia