Submitted for Publication: May 4, 2014; final revision received July 4, 2014; accepted July 7, 2014.
Published Online: July 29, 2014. doi:10.1001/jamaoto.2014.1539.
Study concept and design: Amit, Cernea, Kreppel, Shpitzer, R. P. Patel, Shah, S. G. Patel, Gil.
Acquisition, analysis, or interpretation of data: Amit, Yen, Liao, Chaturvedi, Agarwal, Kowalski, Kohler, Ebrahimi, Clark, Cernea, Brandao, Kreppel, Zöller, Leider-Trejo, Bachar, Shpitzer, Bolzoni, R. P. Patel, Jonnalagadda, Robbins, Gil.
Drafting of the manuscript: Amit, Kreppel, Bachar, R. P. Patel, Gil.
Critical revision of the manuscript for important intellectual content: Yen, Liao, Chaturvedi, Agarwal, Kowalski, Kohler, Ebrahimi, Clark, Cernea, Brandao, Kreppel, Zöller, Leider-Trejo, Shpitzer, Bolzoni, Jonnalagadda, Robbins, Shah, S. G. Patel, Gil.
Statistical analysis: Amit, Yen, Liao, Ebrahimi, Brandao, Kreppel, Zöller, Gil.
Administrative, technical, or material support: Yen, Liao, Kohler, Kreppel, Leider-Trejo, Bachar, Shpitzer, Jonnalagadda, S. G. Patel, Gil.
Study supervision: Amit, Chaturvedi, Cernea, Kreppel, Shpitzer, Bolzoni, Gil.
Conflict of Interest Disclosures: None reported.
Funding/Support: This research was supported by the Israel Science Foundation, grant 20090068 from the Israel Cancer Association (donated by Ellen and Emanuel Kronitz in memory of Dr Leon Kronitz), an intramural grant from the Rambam Medical Center, and a grant from the US-Israel Binational Science Foundation.
Role of the Funder/Sponsor: The funding institutions had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Previous Presentation: This study was presented at the Fifth World Congress of the International Federation of Head and Neck Oncologic Societies and the Annual Meeting of the American Head & Neck Society; July 29, 2014; New York, New York.