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. Department of Biological Sciences Dar es salaam University College of Education University of Dar es Salaam Dar es Salaam Tanzania
4. Comprehensive Cancer Centre Kings College London London UK
5. Department of Pharmaceutical Microbiology Muhimbili University of Health and Allied Sciences Dar es Salaam Tanzania
6. National Institute for Medical Research Tanga Tanzania
7. Department of Medicine, Surgery and Health Sciences University of Trieste Trieste Italy
8. Department of Haematology and Blood Transfusion Muhimbili University of Health and Allied Sciences Dar es Salaam Tanzania