1. Dermatology Department; University Hospital of Saint-Etienne; Saint-Etienne Cedex 2 France
2. Dermatology Department; Hôpital Archet 2; Nice France
3. Centre de Recherche Clinique, CRC; Nice France
4. INSERM U 1065; Equipe 1; Nice France
5. Dermatology Department; University Hospital of Barcelona; Barcelona Spain
6. Dermatology Department; Hôpital Saint Vincent de Paul; GHICL; Lille France
7. Dermatology Department; Hospital Sant Joan de Deu; Barcelona Spain
8. Pathology Department; University Hospital of Saint-Etienne; Saint-Etienne France
9. Pathology Department; Hôpital Archet 2; Nice France