1. Referral Center for Sickle Cell Disease,
2. Department of Pediatrics, and
3. Medical Imaging Department, Centre Hospitalier Intercommunal de Créteil, Université Paris-Est Créteil Val de Marne, Créteil, France;
4. Department of Hematology, Saint-Louis Hospital and
5. Department of Pediatric Hematology, Robert Debré Hospital, Paris Diderot University, Paris, France; and
6. INSERM Unité 955, Université Paris-Est Créteil Val de Marne, Créteil, France