[1] Univ Groningen, Univ Med Ctr Groningen, Dept Otorhinolaryngol & Head & Neck Surg, Groningen, Netherlands
[2] Dutch Inst Clin Auditing, Sci Bur, Leiden, Netherlands
[3] Netherlands Canc Inst, Dept Head & Neck Oncol & Surg, Antoni van Leeuwenhoek, Amsterdam, Netherlands
[4] Netherlands Comprehens Canc Org IKNL, Dept Res, Utrecht, Netherlands
[5] Univ Groningen, Univ Med Ctr Groningen, Dept Epidemiol, Groningen, Netherlands
[6] Univ Groningen, Univ Med Ctr Groningen, Dept Pathol, Groningen, Netherlands
[7] Vrije Univ Amsterdam, Amsterdam Univ Med Ctr, Dept Pathol, Amsterdam, Netherlands
[8] Maastricht Univ, Med Ctr, Dept Radiat Oncol MAASTRO, GROW Sch Oncol & Dev, Maastricht, Netherlands
[9] Erasmus MC Canc Inst, Dept Med Oncol, Rotterdam, Netherlands
[10] Leiden Univ, Dept Radiol, Med Ctr, Leiden, Netherlands
[11] Univ Amsterdam, Amsterdam Univ, Dept Oral & Maxillofacial Surg, Med Ctr, Amsterdam, Netherlands
[12] Radboud Univ Nijmegen, Dept Oral & Maxillofacial Surg, Med Ctr, Nijmegen, Netherlands
[13] Univ Twente, Dept Hlth Technol & Serv Res, Tech Med Ctr, Enschede, Netherlands
[14] Univ Med Ctr Utrecht, Dept Head & Neck Surg Oncol, Utrecht, Netherlands
[15] Radboud Univ Nijmegen, Dept Otolaryngol Head & Neck Surg, Med Ctr, Nijmegen, Netherlands