1. Department of Dermatology, Edouard Herriot Hospital Center, Lyon, France
2. Department of Dermatology, Saint-Joseph Hospital Center, Marseille, France
3. UCB Pharma S.A, Colombes, France
4. HEVA, Lyon, France
5. Biostatistics and Epidemiology office, Gustave Roussy, Paris-Saclay University, Villejuif, France