1. Department of Obstetrics and Gynaecology Nnamdi Azikiwe University Nnewi Nigeria
2. Department of Obstetrics and Gynaecology Nnamdi Azikiwe University Teaching Hospital Nnewi Nigeria
3. Department of Paediatrics Nnamdi Azikiwe University Teaching Hospital Nnewi Nigeria
4. Department of Obstetrics and Gynaecology Federal Medical Centre Umuahia Nigeria
5. Department of Paediatrics ESUT Teaching Hospital Enugu Nigeria
6. Department of Obstetrics and Gynaecology Chukwuemeka Odumegwu Ojukwu University Teaching Hospital Awka Nigeria
7. Department of Obstetrics and Gynaecology University of Nigeria Teaching Hospital Ituku Ozalla Enugu State Nigeria
8. Department of Obstetrics and Gynaecology Federal Medical Centre Owerri Nigeria
9. Department of Paediatrics University of Nigeria Teaching Hospital Ituku Ozalla Enugu State Nigeria
10. Department of Paediatrics Alex Ekwueme Federal University Teaching Hospital Abakaliki Nigeria
11. Department of Mother & Child Health Research Institute for Clinical Effectiveness and Health Policy (IECS) Buenos Aires Argentina
12. Department of Obstetrics and Gynaecology ESUT Teaching Hospital Enugu Nigeria
13. Department of Medical Records Nnamdi Azikiwe University Teaching Hospital Nnewi Nigeria
14. Department of Medical Records University of Nigeria Teaching Hospital Ituku Ozalla Enugu State Nigeria
15. Department of Obstetrics and Gynaecology Alex Ekwueme Federal University Teaching Hospital Abakaliki Nigeria
16. UNDP/UNFPA/UNICEF/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction (HRP), Department of Sexual and Reproductive Health and Research World Health Organization Geneva Switzerland
17. Department of Obstetrics and Gynaecology Aminu Kano Teaching Hospital Kano Nigeria