1. Dermatology Department Hospital universitario de la Princesa, Instituto de Investigación Sanitaria de La Princesa (IIS‐IP) Madrid Spain
2. Dermatology Department Hospital Universitario Marqués de Valdecilla Santander Spain
3. Dermatology Department Hospital Universitario Virgen del Rocío Sevilla Spain
4. Dermatology Department Hospital General Universitario Gregorio Marañón Madrid Spain
5. Dermatology Department Hospital Universitario y Politécnico la Fe Valencia Spain
6. Dermatology Department Centro Hospitalar e Universitario do Porto Porto Portugal
7. Dermatology Department Hospital Universitario Infanta Leonor Madrid Spain