1. Department of Dermatology and Venereology; Rostock University Medical Center; Rostock Germany
2. Department of Dermatology; Venereology and Allergology; Division of Evidence-based Medicine in Dermatology (dEBM); Charité - Universitätsmedizin Berlin; corporate member of Free University Berlin; Humboldt University Berlin; and Berlin Institute of Health; Berlin Germany
3. Department of Dermatology; Essen University Hospital, Essen, Germany, German Cancer Consortium (DKTK); Essen/Düsseldorf Germany
4. Department of Dermatology; Venereology and Allergology; Ruhr University Bochum, Germany, WIR “Walk in Ruhr” Center for Sexual Health at St. Elisabeth Hospital; Bochum Germany
5. Department of Dermatology and Venereology; Center for HIV; AIDS and Venereal Diseases; University Hospital Essen; Essen Germany
6. Department of Gynecology and Obstetrics; Heinrich-Heine-University Hospital; Düsseldorf Germany
7. Department of Pediatrics and Adolescent Medicine; University Hospital at Ruhr University Bochum; Bochum Germany
8. Proktologische Praxis Kiel; Kiel Germany
9. Department of Dermatology; Pallas Center Winterthur; Pallas Medical Clinics; Winterthur Switzerland
10. Institute of Medical Microbiology; University Medical Center; Hamburg-Eppendorf; Hamburg Germany
11. Department of Gynecology; Wolfsburg Medical Center; Wolfsburg Germany
12. ifi Institute for Interdisciplinary Medicine; Asklepios Medical Center St. Georg; Hamburg Germany
13. Institute of Forensic Medicine; University Medical Center Hamburg-Eppendorf; Hamburg Germany
14. Department of Urology; Memmingen Medical Center; Memmingen Germany
15. Department of Dermatology; Venereology and Allergology; University Hospital Frankfurt; Frankfurt Germany
16. Institute of Pathology; University Hospital Salzburg; Salzburg Austria
17. Department of Dermatology and Allergology; Bayreuth Medical Center; Bayreuth Germany
18. National Reference Center for Papilloma- and Polyomaviruses; Institute of Virology; University Hospital Cologne; Cologne Germany
19. Department of Infectious Disease Epidemiology; Division Vaccine Prevention; Robert Koch Institute (RKI); Berlin Germany