[1] Hosp Univ Donostia, Otorhinolaryngol Head & Neck Surg Dept, Calle Doctor Begiristain 1, Donostia San Sebastian 20014, Guipuzkoa Basqu, Spain
[2] Biodonostia Res Inst, San Sebastian, Guipuzkoa Basqu, Spain
[3] Icahn Sch Med Mt Sinai, Dept Otolaryngol Head & Neck Surg, New York, NY 10029 USA
[4] Univ Brescia, Dept Otorhinolaryngol Head & Neck Surg, Brescia, Italy
[5] Univ Klinikum Jena, HNO Klin, Jena, Germany
[6] Katholieke Univ Leuven, Sect Head & Neck Oncol, Dept Oncol, Leuven, Belgium
[7] Univ Sao Paulo, Med Sch, Head & Neck Surg & Otorhinolarynglol Dept, AC Camargo Canc Ctr, Sao Paulo, Brazil
[8] Univ Sao Paulo, Med Sch, Head & Neck Surg Dept, Sao Paulo, Brazil
[9] Inst Invest Sanitaria Principado Asturias, Oviedo, Spain
[10] Univ Autonoma Barcelona, Hosp Santa Creu & St Pau, Otorhinolaryngol Dept, C Mas Casanovas 90, Barcelona 08041, Spain
[11] Univ Antioquia, Hosp Univ San Vicente Fdn, Sch Med, Dept Surg, Medellin 050010, Colombia
[12] Hosp Univ Cabuenes, Dept Vasc Surg, Gijon, Spain
[13] Assuta Med Ctr, ARM Ctr Otolaryngol Head & Neck Surg & Oncol, Tel Aviv, Israel
[14] Ben Gurion Univ Negev, Beer Sheva, Israel
[15] Univ Med Ctr Utrecht, Dept Head & Neck Surg Oncol, Utrecht, Netherlands
[16] Mem Sloan Kettering Canc Ctr, Dept Surg, Head & Neck Serv, 1275 York Ave, New York, NY 10021 USA
[17] Univ Helsinki, Dept Otorhinolaryngol Head & Neck Surg, Helsinki, Finland
[18] Helsinki Univ Hosp, Helsinki, Finland
[19] Int Head & Neck Sci Grp, Padua, Italy
[20] Univ Hosp Leuven, Leuven Canc Inst, Otorhinolaryngol Head & Neck Surg, Leuven, Belgium
[21] Univ Oviedo, CIBERONC, Inst Univ Oncol Principado Asturias, Hosp Univ Cent Asturias,Dept Otolaryngol, Oviedo, Spain
[22] Ctr Invest Biomed Red Bioingn Biomat & Nanomed CI, Madrid, Spain
[23] CEXCA Ctr Excelencia Enfermedades Cabeza & Cuello, Medellin 050021, Colombia