1. Department of Dermatology and Venereology Manisa Celal Bayar University Manisa Turkey
2. Department of Dermatology Venereology and Allergology Helios St. Elisabeth Klinik Oberhausen Duisburg Germany
3. Institute of Virology National Reference Center for Papilloma and Polyomaviruses University Hospital Cologne Cologne Germany
4. Department of Pediatric Surgery University Medical Centre Schleswig‐Holstein Kiel Germany
5. Department of Dermatology Venereology and Allergology University Medical Centre Schleswig‐Holstein Kiel Germany