1. Paediatric Department, Sir Lester Bird Medical Centre, Michael’s Mount, St. John’s, Antigua and Barbuda
2. Gambles Medical Centre, Friars Hill Road, St. John’s, Antigua and Barbuda
3. Laboratory of Molecular Genetics and Inherited Disorders of Red Blood Cell, University Hospital of Guadeloupe, Guadeloupe, F.W.I, France
4. Université des Antilles, UFR Médecine/Campus de Fouillolle-Université Paris Cité, Inserm, BIGR, 97159 Pointe-à-Pitre, France
5. Caribbean Institute for Health Research-Sickle Cell Unit, The University of the West Indies, Mona, Kingston 7, Jamaica