1. Department of Paediatrics, Olabisi Onabanjo University Teaching Hospital, Nigeria
2. Department of Obstetrics and Gynaecology, Olabisi Onabanjo University Teaching Hospital, Nigeria
3. Department of Paediatrics, Babcock University Teaching Hospital, Nigeria
4. Department of Haematology and Blood Transfusions, Olabisi Onabanjo University Teaching Hospital, Nigeria