1. Department of Dermatology Hôpital Bichat, AP‐HP Paris France
2. Department of Rheumatology Hôpital Bichat, AP‐HP, Université de Paris Paris France
3. Department of Internal Medicine Institut Mutualiste Montsouris, Université de Paris Paris France
4. Department of Nuclear Medicine Hôpital Bichat, AP‐HP, Université de Paris Paris France