1. Department of Dermatology and Research Unit; Hospital Universitario Nuestra Señora de Candelaria; Santa Cruz de Tenerife Spain
2. Department of Dermatology; Clínica Buenaderma; Las Palmas de Gran Canaria Spain
3. Department of Dermatology; Hospital Universitari de Bellvitge; IDIBELL; Barcelona Spain
4. Department of Dermatology; Hospital Universitario 12 de Octubre, i+12 Research Institute; Universidad Complutense Madrid; Madrid Spain
5. Department of Dermatology; Hospital del Mar; Universitat Autónoma de Barcelona; Barcelona Spain
6. Department of Dermatology; Hospital Clínico; University of Barcelona; IDIBAPS; Barcelona Spain
7. Department of Dermatology; Hospital Santa Creu i Sant Pau; UAB; Barcelona Spain
8. Department of Dermatology; Hospital Universitario Ramón y Cajal; Madrid Spain
9. Department of Dermatology; Hospital Universitario de Salamanca; Salamanca Spain
10. Department of Dermatology; Hospital de Basurto; Bilbao Spain
11. Department of Dermatology; IRBLleida, Hospital Universitari Arnau de Vilanova; Lleida Spain
12. Department of Dermatology; Hospital General Universitario de Alicante; Alicante Spain
13. Department of Dermatology; Hospital Universitario Virgen del Rocío; Sevilla Spain
14. Department of Dermatology; Hospital de León; León Spain
15. Department of Dermatology; Complejo Hospitalario Universitario Insular Materno-Infantil; Gran Canaria, Las Palmas de Gran Canaria Spain
16. Department of Dermatology; Hospital Universitario Dr. Negrín; Las Palmas de Gran Canaria Spain
17. Department of Dermatology; Hospital Virgen de Valme; Sevilla Spain
18. Department of Dermatology; Hospital Universitari Vall d'Hebron; Barcelona Spain