1. Division of Evidence-Based Medicine; Klinik für Dermatologie; Charité - Universitätsmedizin Berlin; Berlin Germany
2. Department of Dermatocancerolgy; Nantes University Hospital; Hôtel-Dieu; Nantes France
3. Department of Clinical and Experimental Medicine; Section of Dermatology; University of Ferrara; Ferrara Italy
4. Department of Dermatology; School of Medicine University of Zagreb; Zagreb Croatia
5. Private practice; Munich Germany
6. Department of Dermatology and Wound Healing; Cardiff University School of Medicine; Cardiff UK
7. Department of Dermatology; Bispebjerg Hospital; University of Copenhagen; Copenhagen Denmark
8. University Hospital of Antwerp; University of Antwerp; Antwerp Belgium
9. Department of Dermatology; Harrogate and District Foundation Trust; Harrogate North Yorkshire UK
10. Aarhus Universitet; Aarhus Denmark
11. Dermatology Department; Alcorcon University Hospital Foundation; Alcorcón Madrid Spain
12. Department of Dermatology and Venereology; University of Frankfurt; Frankfurt Germany
13. Department of Laboratory Medicine; Karolinska Institutet; Karolinska University Hospital Huddinge and Diagnostiskt Centrum Hud; Stockholm Sweden
14. Private practice; Anderlecht Belgium
15. Department of Dermatology and Venereology; University of Magdeburg; Magdeburg Germany