1. Department of Dermatology Hospital General Universitario Gregorio Marañón Madrid Spain
2. Department of Pathology Hospital Universitario de Fuenlabrada Madrid Spain
3. Department of Dermatology Hospital Universitario del Niño Jesús Madrid Spain
4. Laboratory of Immune‐regulation ‘Gregorio Marañón’ Health Research Institute (IISGM) Madrid Spain
5. Medical School Universidad Complutense de Madrid Spain