1. Ghana Institute of Clinical Genetics, Korle- Bu; Accra Ghana
2. Department of Hematology; Korle-Bu Teaching Hospital; Accra Ghana
3. Department of Hematology, College of Health Sciences; University of Ghana; Accra Ghana
4. Department of Obstetrics and Gynecology; Korle-Bu Teaching Hospital; Accra Ghana
5. Department of Physiology, School of Biomedical and Allied Health Sciences; University of Ghana; Accra Ghana
6. Department of Anesthesia; Korle-Bu Teaching Hospital; Accra Ghana
7. Vanderbilt-Meharry Center of Excellence in Sickle Cell Disease, Vanderbilt University Medical Center; Nashville
8. Duke University; Durham North Carolina
9. Statistical Consultant; Chicago Illinois
10. Department of Obstetrics and Gynecology; School of Medicine and Dentistry, University of Ghana; Accra Ghana