[1] Sri Shankara Canc Hosp & Res Ctr, Dept Head & Neck Surg Oncol, Bangalore 560004, Karnataka, India
[2] Harvard Med Sch, Massachusetts Eye & Ear Infirm, Dept Otolaryngol Head & Neck Surg, Div Thyroid & Parathyroid Endocrine Surg, Boston, MA USA
[3] Univ Oviedo, Hosp Univ Cent Asturias, Dept Otolaryngol, CIBERONC,ISPA,IUOPA, Oviedo 33011, Spain
[4] Univ Texas MD Anderson Canc Ctr, Dept Head & Neck Surg, Houston, TX USA
[5] ASST Spedali Civili Brescia, Unit Otorhinolaryngol Head & Neck Surg, Brescia, Italy
[6] Univ Gothenburg, Sahlgrenska Ctr Canc Res, Dept Pathol, Gothenburg, Sweden
[7] Univ Med Ctr Utrecht, Dept Nucl Med & Radiol, Heidelberglaan 100, NL-3584 CX Utrecht, Netherlands
[8] Univ Edinburgh, Dept Surg & Otolaryngol Head & Neck Surg, Edinburgh EH3 9YL, Scotland
[9] Univ Geneva, Geneva Univ Hosp, Dept Endocrinol Diabetol Nutr & Therapeut Educ, Rue Gabrielle Perret Gentil, Geneva, Switzerland
[10] Univ Helsinki, Fac Med, Dept Otorhinolaryngol Head & Neck Surg, Helsinki, Finland
[11] Univ Helsinki, Res Program Syst Oncol, Helsinki, Finland
[12] Friedrich Alexander Univ Erlangen Nurnberg, Inst Pathol, Univ Hosp Erlangen, D-91054 Erlangen, Germany
[13] Comprehens Canc Ctr Erlangen EMN CCC ER EMN, D-91054 Erlangen, Germany
[14] Head & Neck Pathol Consultat, Woodland Hills, CA 91364 USA
[15] Coordinator Int Head & Neck Sci Grp, Padua, Italy