1. Department of Metabolic Physiopathology; Institut de Recerca Biomèdica; Lleida Spain
2. Department of Dermatology; Hospital Universitario Arnau de Vilanova; Lleida Spain
3. Department of Dermatology; Hospital Comarcal de Móra d'Ebre; Tarragona Spain
4. Department of Pathology; Hospital Universitario Arnau de Vilanova; Lleida Spain