1. Department of Internal Medicine and Clinical Immunology, French National Reference Center for Adult' Immune Cytopenias Henri‐Mondor University Hospital, Assistance Publique Hôpitaux de Paris, Université Paris‐Est Créteil Créteil France
2. Department of Internal Medicine and Clinical Immunology Aix Marseille Univ, APHM, La Timone Hospital Marseille France
3. Department of Internal Medicine and Clinical Immunology Bordeaux University Hospital Bordeaux France
4. Department of Internal Medicine and Clinical Immunology & Clinical Investigation Center 1436 Purpan Hospital, Toulouse University Hospital Toulouse France
5. Department of Internal Medicine and Clinical Immunology, Oncopole Hospital Toulouse University Hospital Toulouse France
6. Department of Internal Medicine and Clinical Immunology Assistance Publique Hôpitaux de Paris, APHP, Cochin University Hospital Créteil France
7. Department of Internal Medicine and Clinical Immunology Assistance Publique Hôpitaux de Paris, APHP, St Louis Hospital Paris France
8. Department of Internal Medicine and Clinical Immunology Aix Marseille Univ, APHM, Hopital Nord Marseille France
9. Department of Internal Medicine and Clinical Immunology CHU de Lyon, Hospices Civils Lyon France
10. Department of Internal Medicine and Clinical Immunology CHU de Nice, l'Archer Hospital Nice France
11. Department of Internal Medicine and Clinical Immunology Groupe Hospitalier Sud, CH de Melun Melun France
12. Department of Internal Medicine and Clinical Immunology CHU de Clermont Ferrand Clermont Ferrand France
13. Department of Internal Medicine and Clinical Immunology Assistance Publique Hôpitaux de Paris, APHP, Bichat Hospital Paris France
14. Department of Internal Medicine and Clinical Immunology Assistance Publique Hôpitaux de Paris, APHP, St Antoine Hospital Paris France
15. Santé Publique Agence Régionale de Santé, Ile de France Saint Denis France