1. Dermatology Department; Hospital Sant Pau i Santa Tecla; Tarragona; Spain
2. Dermatology Department; Hospital Universitario de Alicante; Alicante; Spain
3. Dermatology Department; Hospital de Oncologia ‘A. Roffo’; Universidad de Buenos Aires; Argentina
4. Dermatology Department; Hospital de son Llatzer; Palma de Mallorca; Spain
5. Dermatology Department; Hospital Clinic de Barcelona; Barcelona; Spain
6. Dermatology Department; Hospital La Paz; Madrid; Spain