1. Department of Obstetrics and Gynaecology, Faculty of Medical Sciences, College of Medicine, University of Nigeria, Ituku-Ozalla Campus, Ituku-Ozalla, Nigeria
2. Department of Obstetrics and Gynaecology, University of Nigeria Teaching Hospital, Ituku-Ozalla, Nigeria
3. Department of Obstetrics and Gynaecology, Enugu State University of Science and Technology Teaching Hospital, Parklane, Nigeria
4. Department of Obstetrics and Gynaecology, Alex Ekwueme Federal University Teaching Hospital, Abakaliki, Nigeria