1. Department of Dermatology & Venereology; Otto-von-Guericke University Magdeburg; Magdeburg Germany
2. Department of Clinical and Experimental Medicine; O.U. of Dermatology; Azienda Ospedaliero-Universitaria; University of Ferrara; Ferrara Italy
3. Department of Dermatology; University Hospital of Antwerp; University of Antwerp; Edegem Belgium
4. Department of Dermatology and Venereal Diseases; First I. P. Pavlov State Medical University of St. Petersburg; St. Petersburg Russia
5. Department of Dermatovenerology; Faculty of Medicine; University of Nis; Nis Serbia
6. Department of Dermatology; A. Syggros Hospital; University of Athens; Athens Greece
7. School of Medicine; United Arab Emirates University; Al-Ain United Arab Emirates
8. Clinic of Infectious, Chest Diseases, Dermatovenereology and Allergology; Vilnius University; Vilnius Lithuania
9. Department of Dermatology; Gazi University Medical School; Ankara Turkey
10. Hautzentrum Zürich; Zürich Switzerland
11. Department of Dermatology and Allergology University of Szeged; Szeged Hungary
12. Hospital Universitario Fundación Alcorcón; Madrid Spain
13. Clínica Dermatológica Dr António Massa; Porto Portugal
14. Department of Laboratory Medicine; Karolinska Institutet Karolinska University Hospital Huddinge; Stockholm Sweden
15. Diagnostiskt Centrum Hud; Stockholm Sweden
16. Department of Dermatology; Faculty of Health Sciences; University of the Free State; Bloemfontein South Africa
17. Department of Dermatology, Venereology and Allergology; Wroclaw Medical University; Wroclaw Poland
18. Department of Dermato-Cancerology; University of Nantes; Nantes France