1. The Dermatology Centre, Salford Royal NHS Foundation Trust and Institute of Inflammation and Repair; University of Manchester; Manchester United Kingdom
2. Department of Pathology; University General Hospital and Murcia University; Spain
3. Mediteknia Dermatology Clinic; Las Palmas; Gran Canaria Spain
4. Cell Cycle, Stem Cell Fate and Cancer Laboratory; Instituto de Formación e Investigación Marqués de Valdecilla (FMDV-IFIMAV); Santander Spain. INSERM France
5. Instituto Biodonostia, Hospital Universitario Donostia; San Sebastian Spain
6. Department of Dermatology; University of Münster; Münster Germany