1. Department of Dermatology Hospital Ernest Lluch Calatayud, Zaragoza Spain
2. Department of Dermatology Hospital General Universitario de Alicante, ISABIAL Alicante Spain
3. Department of Dermatology Centre Hospitalier Lyon Sud Pierre‐Bénite France
4. Lyon 1 University Lyon France
5. Lyons Cancer Research Center UMR INSERM U1052 ‐ CNRS5286 ‐ UCBL1 Lyon France
6. Department of Dermatology Universidade Federal de São Paulo São Paulo Brazil
7. Dermatology Unit Second University of Naples Naples Italy
8. Department of Dermatology Hospital Universitario de Gran Canaria "Doctor Negrín" Gran Canaria Spain
9. Dermatology Department University of Catania Catania Italy
10. Department of Dermatology Hospital Universitari Son Espases Palma de Mallorca Spain
11. Department of Dermatology Hospital Clínico Universitario "Lozano Blesa" Zaragoza Spain
12. Department of Dermatology Hospital Sant Pau i Santa Tecla Tarragona Spain