[1] Johns Hopkins Med Inst, Dept Pathol, Baltimore, MD 21205 USA
[2] Johns Hopkins Med Inst, Dept Otolaryngol Head & Neck Surg, Baltimore, MD 21205 USA
[3] Allegiance Hlth, Dept Pathol, Jackson, MI USA
[4] Univ Pittsburgh, Sch Med, Dept Pathol, Pittsburgh, PA 15260 USA
[5] Radboud Univ Nijmegen, Med Ctr, Dept Pathol, Nijmegen, Netherlands
[6] Univ Barcelona, Hosp Clin Barcelona, Dept Anat Pathol, E-08007 Barcelona, Spain
[7] Univ Pathologists, Providence, RI USA
[8] Univ Pathologists, Fall River, MA USA
[9] Univ Texas MD Anderson Canc Ctr, Dept Pathol, Houston, TX 77030 USA
[10] Univ Liverpool, Sch Dent, Oral & Maxillofacial Pathol, Liverpool L69 3BX, Merseyside, England
[11] Liverpool Clin Labs, Cellular Pathol, Liverpool, Merseyside, England
[12] Univ Med Ctr Utrecht, UMC Utrecht Canc Ctr, Dept Head & Neck Surg Oncol, Utrecht, Netherlands
[13] Southern Illinois Univ, Sch Med, Div Otolaryngol Head & Neck Surg, Springfield, IL USA
[14] Hosp Univ Cent Asturias, Dept Otolaryngol, Oviedo, Spain
[15] Katholieke Univ Leuven, Univ Hosp Leuven, Otorhinolaryngol Head & Neck Surg, Leuven, Belgium
[16] Katholieke Univ Leuven, Univ Hosp Leuven, Dept Oncol, Sect Head & Neck Oncol, Leuven, Belgium
[17] European Salivary Gland Soc, Geneva, Switzerland
[18] Fdn Invest Innovac Biosanitaria Principado Asturi, Oviedo, Spain
[19] Mem Sloan Kettering Canc Ctr, Head & Neck Surg, 1275 York Ave, New York, NY 10021 USA
[20] Univ Nottingham Hosp, Dept Otolaryngol Head & Neck Surg, Queens Med Ctr Campus, Nottingham, England
[21] AC Camargo Canc Ctr, Dept Head & Neck Surg & Otorhinolaryngol, Sao Paulo, Brazil
[22] Univ Arizona, Coll Med, Dept Surg, Phoenix, AZ USA
[23] Hosp Univ Cent Asturias, Dept Otolaryngol, Oviedo, Spain
[24] Univ Oviedo, Inst Univ Oncol Principado Asturias, Oviedo, Asturias, Spain
[25] Banner MD Anderson Canc Ctr, Dept Surg, Gilbert, AZ USA
[26] Philipp Univ, Dept Otolaryngol Head & Neck Surg, Marburg, Germany
[27] Rutgers New Jersey Med Sch, Dept Otolaryngol Head & Neck Surg, Neurol Inst New Jersey, Newark, NJ USA
[28] Radboud Univ Nijmegen, Med Ctr, Dept Otolaryngol Head & Neck Surg, Nijmegen, Netherlands
[29] St Luc Univ Hosp, Dept Head & Neck Surg, Head & Neck Oncol Program, Brussels, Belgium
[30] King Albert II Canc Inst, Brussels, Belgium
[31] Univ Oklahoma, Hlth Sci Ctr, Dept Otorhinolaryngol, Oklahoma City, OK USA
[32] Univ Florida, Dept Radiat Oncol, Gainesville, FL USA
[33] Inst Oncol, Dept Radiat Oncol, Ljubljana, Slovenia
[34] Univ Algarve, Dept Biomed Sci & Med, Faro, Portugal
[35] Charles Univ Prague, Fac Med Plzen, Dept Pathol, CR-11636 Prague 1, Czech Republic
[36] Univ Udine, Sch Med, I-33100 Udine, Italy
[37] Int Head & Neck Sci Grp, Padua, Italy