1. Department of Dermatology, Allergology Unit University Hospital of Besançon Besançon France
2. Dermatologist, Dermatology Clinic Aarschot Belgium
3. Department of Dermatology University Hospitals, KU Leuven Leuven Belgium
4. Dermatology Clinic University of Franche‐Comté, Inserm U1098 RIGHT Besançon France