1. Department of Obstetrics and Gynaecology, Enugu State University of Science and Technology, College of Medicine/Teaching Hospital, Parklane, Enugu, Nigeria
2. Department of Community Medicine, University of Nigeria Teaching Hospital (UNTH), Ituku Ozalla, Enugu, Nigeria
3. Department of Haematology and Immunology, University of Nigeria Teaching Hospital (UNTH), Ituku Ozalla, Enugu, Nigeria
4. Department of Haematology and Immunology, College of Medicine, Ituku Ozalla Campus, Enugu, Nigeria
5. Department of Chemical Pathology, College of Medicine, University of Nigeria Teaching Hospital (UNTH), Ituku Ozalla, Enugu, Nigeria
6. Department of Obstetrics and Gynaecology, University of Nigeria Teaching Hospital (UNTH), Ituku Ozalla, Enugu, Nigeria
7. Department of Obstetrics and Gynaecology, Alex Ekwueme Federal University Teaching Hospital, Abakaliki, Nigeria
8. Department of Chemical Pathology, College of Medicine, Enugu State University of Science and Technology (ESUT), Enugu, Nigeria
9. Department of Obstetrics and Gynaecology, College of Medicine, University of Nigeria Ituku/Ozalla Campus, Enugu State, Nigeria