1. Department of Obstetrics and Gynaecology; Faculty of Medical Sciences, College of Medicine, University of Nigeria Nsukka/University of Nigeria Teaching Hospital Ituku-Ozalla, Enugu State; Enugu Nigeria
2. Effective Care Research Unit, Department of Obstetrics and Gynaecology; Faculty of Medicine, College of Health Sciences, Nnamdi Azikiwe University, Nnewi Campus; PMB 5001, Nnewi Nigeria
3. Department of Haematology and Immunolology; College of Medicine, University of Nigeria Nsukka/University of Nigeria Teaching Hospital Ituku Ozalla, Enugu State; Enugu Nigeria
4. Department of Haematology and Immunology; Faculty of Medical Sciences, College of Medicine, University of Nigeria Nsukka/University of Nigeria Teaching Hospital Ituku-Ozalla, Enugu State; Enugu Nigeria
5. Department of Obstetrics and Gynaecology; Nnamdi Azikiwe University Teaching Hospital; Nnewi Nigeria
6. Department of Obstetrics and Gynaecology; Faculty of Medical Science, College of Medicine, University of Nigeria Enugu Campus/University of Nigeria Teaching Hospital Ituku-Ozalla, Enugu State; Enugu Nigeria
7. Department of Paediatrics; Faculty of Medical Sciences, College of Medicine, University of Nigeria Enugu Campus/University of Nigeria Teaching Hospital Ituku-Ozalla, Enugu State; Enugu Nigeria