1. Department of Dermatology Hospital del Mar‐Institut Mar d'Investigacions Mèdiques Barcelona Spain
2. Department of Dermatology Hospital Universitari de Bellvitge Hospitalet de Llobregat Spain
3. Department of Dermatology Hospital de la Santa Creu i Sant Pau Barcelona Spain
4. Department of Dermatology Hospital Germans Trias i Pujol Badalona Spain
5. Department of Dermatology Hospital Universitari Sagrat Cor Barcelona Spain
6. Department of Dermatology Hospital Parc Taulí Sabadell Spain
7. Department of Dermatology Hospital Moisès Broggi Sant Joan Despí Spain