Submitted for Publication: May 23, 2013; final revision received July 25, 2013; accepted August 7, 2013.
Published Online: October 24, 2013. doi:10.1001/jamaoto.2013.5308.
Study concept and design: Moore, Gordon, McDonald.
Acquisition of data: Linton, Gordon, Summerlin, McDonald.
Analysis and interpretation of data: All authors.
Drafting of the manuscript: Linton, Gordon, McDonald.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Linton, Gordon, McDonald.
Administrative, technical, and material support: Gordon, McDonald.
Study supervision: McDonald.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was supported in part by the Jesse N. Jones III Memorial Fund for Head and Neck Cancer Research at the Indiana University Melvin and Bren Simon Cancer Center.
Role of the Sponsor: The funding source 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 in part at the 52nd annual meeting of the American Society for Radiation Oncology; November 2, 2010; San Diego, California.