1. Clinic for Dermatology, Venereology, and Allergology, University Hospital, Goethe University Frankfurt, Frankfurt, Germany
2. Department of Obstetrics and Gynecology, Buenos Aires University, Buenos Aires, Argentina
3. Department of Medicine, University of Toronto, Toronto, Canada
4. Department of Dermatovenereology, Zagreb University School of Medicine and Zagreb University Hospital, Zagreb, Croatia
5. Department of Dermatovenereology, 2nd Medical Faculty, Charles University, Bulovka Hospital, Praha, Czech Republic
6. Department of Dermatology, SCJ Sibiu University ‘Lucian Blaga,’ Faculty of Medicine, Sibiu, Romania
7. Centro Sanitario Sandoval de Madrid, Madrid, Spain
8. Dermatology Department, University of Brescia, Brescia, Italy