1. Research Unit; Fundación Piel Sana AEDV Madrid; Ferraz 100, 1° izda Madrid Spain
2. Complexo Hospitalario Universitario de Vigo; Vigo Meixoeiro sn 36200 Vigo Spain
3. Department of Dermatology; Leiden University Medical Centre; Albinusdreef 2 2333ZA Leiden the Netherlands
4. Centre for Evidence Based Healthcare; School of Health Sciences; Faculty of Medicine and Health Sciences; The University of Nottingham; Nottingham U.K.
5. Department of Dermatology & Wound Healing; Division of Infection and Immunity; Cardiff University; University Hospital of Wales; 3 Floor Glamorgan House, Heath Park Cardiff CF14 4XN U.K.