1. Sickle Cell Disease Center, Centre Hospitalier de Cayenne French Guiana Cayenne France
2. Service de Pédiatrie, Centre Hospitalier de Chartres Le Coudray France
3. INSERM U1424, Centre Hospitalier de Cayenne French Guiana Cayenne France
4. Pediatric Hematology and Oncology, Boston Children's Hospital Boston Massachusetts USA