1. Dermatology Department APHP, Saint‐Louis Hospital Paris France
2. INSERM U976 ‘Human Immunology, Pathophysiology and Immunotherapy’ Institut de Recherche Saint‐Louis Paris France
3. Université de Paris Paris France
4. Pathology Department APHP, Saint‐Louis Hospital Paris France
5. Laboratory of Hematology APHP, Saint‐Louis Hospital Paris France
6. Clinical Hematology Department APHP, Saint‐Louis Hospital Paris France