1. Department of Pathology; University General Hospital, and Murcia University; Murcia Spain
2. Mediteknia Dermatology Clinic and Medical Pathology Group; University of Las Palmas Gran Canaria; Canary Islands Spain
3. Centre for Dermatology Research; Institute of Inflammation and Repair; University of Manchester; Manchester UK
4. Department of Dermatology; University General Hospital; Albacete Spain
5. Department of Dermatology; University of Münster; Münster Germany