1. Department of Internal Medicine Toulouse University Hospital Toulouse France
2. CIC 1436 Toulouse University Hospital Toulouse France
3. UMR 1027 INSERM‐ University of Toulouse Toulouse France
4. Department of Clinical Pharmacology Toulouse University Hospital Toulouse France
5. Department of Internal Medicine, Referral Center for Autoimmune Cytopenias Créteil University Hospital Créteil France