1. Department of Dermatology, Hospital General Universitario Dr. Balmis-ISABIAL, Alicante, Spain
2. Department of Medicine, Universidad Miguel Hernández de Elche, Alicante, Spain
3. Department of Dermatology, Hospital Universitario Doctor Peset, Valencia, Spain
4. Department of Dermatology, Hospital Universitario Parc Taulí, Sabadell, Spain
5. Department of Medicine, Universitat Autònoma de Barcelona, Barcelona, Spain
6. Department of Dermatology, Hospital Universitario Fundación Alcorcón, Alcorcón, Spain
7. Department of Dermatology, Hospital Universitario Infanta Leonor, Madrid, Spain
8. Department of Dermatology, Hospital Universitari Germans Trias i Pujol, Badalona, Spain