[1] Louisiana State Univ, Hlth Sci Ctr, Shreveport, LA 71103 USA
[2] Dept Otolaryngol Head & Neck Surg, Mayo Clin Arizona, Phoenix, AZ USA
[3] Univ Med Ctr Utrecht, UMC Utrecht Canc Ctr, Dept Head & Neck Surg Oncol, Utrecht, Netherlands
[4] Univ Sao Paulo, Med Sch, Head & Neck Surg Dept, Sao Paulo, Brazil
[5] AC Camargo Canc Ctr, Dept Head & Neck Surg & Otorhinolaryngol, Sao Paulo, Brazil
[6] Jena Univ Hosp, Inst Phoniatry & Pedaudiol, Dept Otorhinolaryngol, Jena, Germany
[7] Nottingham Univ Hosp, Queens Med Ctr Campus, Dept ORLHNS, Derby Rd, Nottingham NG7 2UH, England
[8] Vrije Univ Amsterdam, Radiol & Nucl Med, Amsterdam UMC Locat, de Boelelaan 1117, Amsterdam, Netherlands
[9] Canc Ctr Amsterdam, Imaging & Biomarkers, Amsterdam, Netherlands
[10] Inst Oncol, Dept Radiat Oncol, Ljubljana 1000, Slovenia
[11] Sri Shankara Canc Hosp & Res Ctr, Dept Head & Neck Oncol, Bangalore, India
[12] Univ Helsinki, Dept Otorhinolaryngol Head & Neck Surg, Res Program Syst Oncol, Fac Med, Helsinki, Finland
[13] Helsinki Univ Hosp, Helsinki, Finland
[14] Hosp Univ Cent Asturias, ENT & Head & Neck Dept, Oviedo, Spain
[15] ENT Unit, Policlin Citta Udine, I-33100 Udine, Italy
[16] Sydney Head & Neck Canc Inst, Chris OBrien Lifehouse, Sydney, NSW, Australia
[17] Univ Sydney, Fac Med & Hlth, Sydney Med Sch, Sydney, NSW, Australia
[18] Mt Sinai Med Ctr, Dept Otolaryngol Head & Neck Surg, New York, NY 10029 USA
[19] Univ Antioquia, Ctr Excelencia Cirugia Cabeza & Cuello, Sch Med, Dept Surg, Medellin, Colombia
[20] Univ Oviedo, Hosp Univ Cent Asturias, Dept Otolaryngol, IUOPA,CIBERONC, Oviedo 33011, Spain
[21] Int Head & Neck Sci Grp, I-35030 Padua, Italy