1. Department of Obstetrics and Gynaecology, Alex Ekwueme Federal University Teaching Hospital Abakaliki, Abakaliki, Nigeria
2. Department of Obstetrics and Gynecology, Nnamdi Azikiwe University Teaching Hospital, Nnewi, Nigeria
3. Department of Anaesthesia, Alex Ekwueme Federal University Teaching Hospital Abakaliki, Abakaliki, Nigeria