1. Muhimbili Sickle Cell Programme Muhimbili University of Health and Allied Sciences Dar es Salaam Tanzania
2. Department of Biochemistry Muhimbili University of Health and Allied Sciences Dar es Salaam Tanzania
3. Tanzania Human Genetics Organization Dar es Salaam Tanzania
4. Comprehensive Cancer Centre Kings College London London UK
5. Department of Clinical Pharmacology Muhimbili University of Health and Allied Sciences Dar es Salaam Tanzania
6. Department of Hematology and Blood Transfusion Muhimbili Univerity of Health and Allied Sciences Dar es Salaam Tanzania