[1] Univ Cologne, Med Fac, Dept Otorhinolaryngol Head & Neck Surg, Cologne, Germany
[2] Univ Cologne, Fac Med, Ctr Mol Med Cologne CMMC, Cologne, Germany
[3] Univ Cologne, Univ Hosp Cologne, Ctr Mol Med Cologne CMMC, Cologne, Germany
[4] Med Univ Innsbruck, Dept Otorhinolaryngol, Innsbruck, Austria
[5] Univ Giessen, Dept Otorhinolaryngol Head & Neck Surg, Giessen, Germany
[6] Univ Cologne, Fac Med, Inst Med Stat & Computat Biol, Cologne, Germany
[7] Barts Hlth NHS Trust, Royal London Hosp, London, England
[8] UCL, UCL Canc Inst, London, England
[9] Med Univ Innsbruck, Dept Med Psychol, Innsbruck, Austria
[10] Univ Witten Herdecke, Helios St Elisabeth Hosp Oberhausen, Dept Dermatol Venereol & Allergol, Witten, Germany
[11] Univ Cologne, Inst Virol, Natl Reference Ctr Papilloma & Polyomavir Uses, Fac Med, Cologne, Germany
[12] Univ Hosp Cologne, Cologne, Germany