[1] Univ Antioquia, Dept Surg, Sch Med, IPS Univ,Hosp Univ San Vicente Fdn, Medellin, Colombia
[2] CEXCA Ctr Excelencia Enfermedades Cabeza & Cuello, Clin Vegas Grp Quironsalud, Medellin, Colombia
[3] Univ Nacl Colombia, Dept Surg, Sch Med, Hosp Univ Nacl Colombia, Bogota, Colombia
[4] AC Camargo Canc Ctr, Head & Neck Surg & Otorhinolaryngol Dept, Sao Paulo, Brazil
[5] Mem Sloan Kettering Canc Ctr, Dept Surg, Head & Neck Serv, New York, NY 10021 USA
[6] Sechenov Univ, Dept Oncol Radiotherapy & Plast Surg, Moscow, Russia
[7] Sarasota Mem Hlth Care Syst, FPG Thyroid & Parathyroid Ctr, Div Head & Neck Endocrine Surg, Sarasota, FL USA
[8] Univ Texas MD Anderson Canc Ctr, Dept Head & Neck Surg, Houston, TX 77030 USA
[9] Edinburgh Royal Infirm, Dept Otorhinolaryngol Head & Neck Surg, Edinburgh, Midlothian, Scotland
[10] Harvard Med Sch, Massachusetts Eye & Ear Infirm, Thyroid Surg Oncol, Thyroid Parathyroid Endocrine Surg Div, Boston, MA 02115 USA
[11] Kings Coll London, Dept Otorhinolaryngol Head & Neck Surg, Guys & St Thomas Hosp NHS Fdn Trust, London, England
[12] Univ Hosp Leuven, Otorhinolaryngol Head & Neck Surg, Leuven, Belgium
[13] Katholieke Univ Leuven, Dept Oncol, Sect Head & Neck Oncol, Leuven, Belgium
[14] Univ Udine, Sch Med, Udine, Italy
[15] Univ Oklahoma, Coll Med, Dept Otolaryngol & Head & Neck Surg, Oklahoma City, OK 73190 USA
[16] Assuta Med Ctr, Head & Neck Surg & Oncol Unit, ARM Ctr Adv Otolaryngol Head & Neck Surg, Tel Aviv, Israel
[17] Univ Chicago, Dept Surg, 5841 S Maryland Ave, Chicago, IL 60637 USA
[18] Univ Chicago, MacLean Ctr Clin Med Eth, Chicago, IL 60637 USA
[19] Univ Helsinki, Dept Otorhinolaryngol Head & Neck Surg, Helsinki, Finland
[20] Helsinki Univ Hosp, Helsinki, Finland
[21] Hosp Univ Cent Asturias ISPA, Dept Otolaryngol, Oviedo, Spain
[22] Univ Oviedo IUOPA, Oviedo, Spain
[23] CIBERONC, Head & Neck Canc Unit, Madrid, Spain
[24] Inst Gustave Roussy, Dept Otolaryngol Head & Neck Surg, Villejuif, France
[25] Lab Phonet & Phonol, Paris, France
[26] Univ Sao Paulo, Sch Med, Dept Head & Neck Surg, Sao Paulo, Brazil
[27] Int Head & Neck Sci Grp, Padua, Italy