1. Department of Dermatology, Hospital General Universitario de Alicante-ISABIAL-UMH, Alicante, Spain
2. Department of Dermatology, Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria La Princesa (IIS-IP), Madrid, Spain
3. Department of Dermatology, Hospital Universitari Germans Trias i Pujol and IGTP. Universitat Autònoma de Barcelona, Barcelona, Spain
4. Department of Dermatology, Hospital Universitario Ramón y Cajal, Madrid, Spain