1. Centre for Haemoglobinopathies Department of Haematology, Herlev and Gentofte Hospital University of Copenhagen Herlev Denmark
2. Sickle Cell Disease Reference Center Department of General Pediatrics and Pediatric Infectious Diseases Necker‐Enfants Malades Hospital Assistance Publique‐Hôpitaux de Paris (AP‐HP) Paris France
3. Department of Haematological Medicine King's College London King’s College Hospital London UK