[1] Radboud Univ Nijmegen Med Ctr, Radboud Inst Hlth Sci, Sci Ctr Qual Healthcare, Nijmegen, Netherlands
[2] Radboud Univ Nijmegen Med Ctr, Dept Otolaryngol Head & Neck Surg, Radboud Inst Hlth Sci, Nijmegen, Netherlands
[3] Netherlands Federat Univ Med Ctr, NFU, Utrecht, Netherlands
[4] Antoni van Leeuwenhoek Nederlands Kanker Inst, Dept Head & Neck Surg & Oncol, Amsterdam, Netherlands
[5] Radboud Univ Nijmegen Med Ctr, Dept Oral & Maxillofacial Surg, Radboud Inst Hlth Sci, Nijmegen, Netherlands