1. Sickle Cell Unit, Tropical Medicine Research Institute; The University of the West Indies; Mona Jamaica
2. Department of Community Health and Psychiatry; The University of the West Indies; Mona Jamaica
3. Tropical Metabolism Research Unit; Tropical Medicine Research Institute; The University of the West Indies; Mona Jamaica
4. Department of Child and Adolescent Health; The University of the West Indies; Mona Jamaica