1. Private Practice Paris France
2. Biostatistic and Epidemiology Inserm U1232 Nantes France
3. Department of Dermatology, Allergology and Photobiology CHU A Michallon Grenoble France
4. Private Practice Tours France
5. UF dermato‐cancérologie CHU Nantes‐Hôtel‐Dieu Inserm U1232 CIC Biothérapie Inserm 05031 Nantes France