1 Department of Pediatrics, Hôpital René Dubos, Pontoise, France.
2 Internal Medicine Department, French National Sickle Cell Referral Center, Hôpital Européen Georges Pompidou, Paris, France.
3 Paediatric Center for Sickle Cell Disease, Maison de la Femme de la Mère et de l'Enfant, Fort de France, France.
4 Department of General Pediatrics, Center for Sickle Cell Disease, Trousseau Hospital, Assistance Publique - Hôpitaux de Paris (AP-HP), Sorbonne Université, Paris, France.
5 Department of General Pediatrics and Pediatric Infectious Diseases, Sickle Cell Center, Necker-Enfants malades Hospital, Assistance Publique - Hôpitaux de Paris (AP-HP), Université de Paris, Paris, France.
6 Department of Paediatric Hemato-oncology, University Hospital of Rennes, Rennes, France.
7 CH Sud Francilien, Corbeil-Essonnes, France.
8 Grand Hôpital de l'Est Francilien (GHEF), Meaux, France.
9 Referral Center for Sickle Cell Disease, Department of Pediatrics, Kremlin-Bicêtre Hospital, University Paris-Sud, Le Kremlin-Bicêtre, France.
10 CH Mayotte, Mamoudzou, France.
11 Department of Pediatric Hematology, Bordeaux Hospital, Bordeaux, France.
12 Institute of Paediatric Hematology and Oncology, Hospices Civils de Lyon, Lyon, France.
13 Faculty of medicine, Université de Paris Cité, Paris, France.