1. Department of Obstetrics and Gynecology, Havana Specialist Hospital, Surulere, Lagos, Nigeria
2. Department of Obstetrics, Gynaecology and Perinatology, Obafemi Awolowo University Teaching Hospitals, Ile-Ife, Nigeria
3. Department of Obstetrics and Gynaecology, Lagos University Teaching Hospital, Idi-Araba, Lagos State, Nigeria
4. Department of Obstetrics and Gynaecology, 68 Nigerian Army Reference Hospital, Yaba, Lagos State, Nigeria
5. Department of Obstetrics and Gynaecology, Federal Teaching Hospital Katsina, Katsina, Nigeria
6. Department of Obstetrics and Gynecology, Nnamdi Azikiwe University, Awka, Anambra State, Nigeria
7. Department of Obstetrics and Gynecology, Nnamdi Azikiwe University Teaching Hospital Nnewi Campus, Anambra State, Nigeria
8. Department of Anatomic and Molecular Pathology, College of Medicine University of Lagos, Lagos State, Nigeria
9. Department of Obstetrics and Gynecology, Bayelsa Medical University, Yenagoa, Bayelsa State, Nigeria