1. Department of Dermatology; Hôpital Erasme; Université Libre de Bruxelles; Brussels Belgium
2. Molecular and Pharmaco-Epidemiology Unit; Department of Experimental Oncology; European Institute of Oncology; IRCCS; Milan Italy
3. Institute of Social and Preventive Medicine (IUMSP); Lausanne University Hospital; Lausanne Switzerland
4. Centro de Dermatologia Epidermis; Instituto CUF; Porto Portugal
5. Portuguese Skin Cancer Association; Lisbon Portugal
6. Center for Health Technology and Services Research (CINTESIS); Porto Portugal
7. Basic and Clinical Immunology Unit; Department of Pathology; Faculty of Medicine; University of Porto; Porto Portugal
8. Department of Community Medicine, Information and Health Decision Sciences (MEDCIDS); Faculty of Medicine; University of Porto; Porto Portugal
9. Institute of Dermatology; Catholic University; Rome Italy
10. First Department of Dermatology; National and Kapodistrian University of Athens School of Medicine; Andreas Sygros Hospital; Athens Greece
11. Department of Dermatology; Instituto Valenciano de Oncología; Valencia Spain
12. Universidad Católica de València San Vicente Ferrer; Valencia Spain
13. Department of Dermatology; University of Florida College of Medicine; Gainesville FL USA
14. Clinic of Infectious, Chest diseases, Dermatovenereology and Allergology; Faculty of Medicine; Vilnius University; Vilnius Lithuania
15. Department of Infectiology and Dermatology; Riga Stradins University; Riga Latvia
16. Dermatology Department; Clinical Center; University of Sarajevo; Sarajevo Bosnia and Herzegovina