1. Department of Dermatology Saint‐Eloi Hospital University Hospital of Montpellier Montpellier France
2. Department of Pathology Gui de Chauliac HospitalUniversity Hospital of Montpellier Montpellier France
3. Department of Dermatology and Internal Medicine Perpignan Hospital Perpignan France
4. Department of Rheumatology Lapeyronie HospitalUniversity Hospital of Montpellier Montpellier France
5. Department of Internal Medicine Bicètre University HospitalAP‐HP Paris France
6. Department of Dermatology La Pitié Salpétrière University HospitalAP‐HP Paris France
7. INSERM U1058 Montpellier France
8. Department of Dermatology Civil Hospital University Hospital of Strasbourg Strasbourg France