1. Department of Obstetrics and Gynaecology, Nnamdi Azikiwe University Teaching Hospital (NAUTH), Nnewi, Nigeria
2. Effective Care Research Unit, Department of Obstetrics and Gynaecology, Nnamdi Azikiwe University, Nnewi, Nigeria
3. Department of Obstetrics and Gynaecology, College of Medicine, University of Nigeria Teaching Hospital, Enugu, Nigeria
4. Division of Maternal and Fetal Medicine, Department of Gynaecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
5. Chidera Hospital and Maternity, Nnewi, Nigeria
6. Nnamdi Azikiwe University Teaching Hospital, Nnewi, Nigeria
7. Department of Obstetrics and Gynaecology, ESUT College of Medicine, Enugu, Nigeria