1. Department of Obstetrics and Gynecology, Nnamdi Azikiwe University Teaching Hospital, PMB, Nnewi, Anambra State, Nigeria
2. Effective Care Research Unit, Department of Obstetrics and Gynecology, Nnamdi Azikiwe University, Awka, Nigeria
3. Department of Obstetrics and Gynecology, Havana Specialist Hospital, Surulere, Lagos, Nigeria
4. Department of Epidemiology and Biostatistics, East Tennessee State University, Johnson City, TN, USA
5. Rural Community Clinical School, School of Medicine, Deakin University, VIC, Australia