1. From the Dermatology Department, Hospital General Universitario de Alicante, Alicante, Spain.
2. Dermatology Department, Hospital General Universitario de Guadalajara, Faculty of Medicine and Health Sciences, Medicine and Medical Specialties Department, Universidad de Alcalá, Alcalá de Henares, Madrid, Spain.
3. Dermatology Department, Hospital del Mar, Institut Mar d'Investigacions Mèdiques, Universitat Pompeu Fabra, Barcelona, Spain.
4. Dermatology Department, Hospital Universitario La Fe, Valencia, Spain.
5. Dermatology Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain.
6. Dermatology Department, Hospital Arnau de Vilanova de Valencia, Valencia, Spain.
7. Dermatology Department, Hospital Universitario de la Princesa, Madrid, Spain.
8. Dermatology Department, Hospital Universitario Infanta Sofía, Madrid, Spain.
9. Dermatology Department, Hospital General Universitario de Valencia, Valencia, Spain.
10. Dermatology Department, Hospital Clínico Universitario Virgen de la Arrixaca, El Palmar, Spain
11. Dermatology Department, Hospital Universitari Germans Trias i Pujol, Badalona, Spain.
12. Dermatology Department, Complejo Hospitalario Universitario de Toledo, Toledo, Spain.
13. Dermatology Department, Complejo Hospitalario Universitario de Santiago de Compostela, Santiago de Compostela, Spain.
14. Dermatology Department, Hospital Universitario de Fuenlabrada, Fuenlabrada, Spain.
15. Dermatology Department, Hospital Universitario Araba, Vitoria-Gasteiz, Spain.