1. Hospital JM Morales Meseguer, Universidad de Murcia, IMIB-Arrixaca, Murcia, Spain
2. Grupo de investigación CB15/00055 del Centro de Investigación Biomedica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
3. Centre de Référence des Cytopénies Auto-Immunes de l’Adulte, Service de Médecine Interne, CHU Henri Mondor, AP-HP, Université Paris-Est Créteil, Créteil, France
4. Department of Haematology, Royal Manchester Children’s Hospital, Manchester, UK
5. Department of Internal Medicine II, Asklepios Clinic Uckermark, Schwedt, Germany
6. Hematology Project Foundation and Department of Hematology, S. Bortolo Hospital, Vicenza, Italy
7. AMGEN Europe GmbH, Rotkreuz, Switzerland
8. Division of Hematology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA