Submitted for Publication: March 2, 2011; final revision received April 20, 2011; accepted June 7, 2011.
Author Contributions: Drs Sinclair, Carroll, Rosenthal, and Magnuson had full access to all the data in the study and take responsibility for the integrity of the data and the accuracy of the data analysis. Study concept and design: Sinclair, Carroll, Rosenthal, and Magnuson. Acquisition of data: Sinclair and McColloch. Analysis and interpretation of data: Sinclair, McColloch, Rosenthal, and Desmond. Drafting of the manuscript: Sinclair and Desmond. Critical revision of the manuscript for important intellectual content: Sinclair, Carroll, Rosenthal, and Magnuson. Statistical analysis: Sinclair and Desmond. Administrative, technical, and material support: Sinclair, McColloch, and Rosenthal. Study supervision: Carroll, Rosenthal, and Magnuson.
Financial Disclosure: Dr Magnuson is a consultant and instructor at Intuitive Surgical, Inc, Sunnyvale, California.
Role of the Sponsor: Intuitive Surgical, Inc had no role in the design and conduct of the study; in the collection, analysis, and interpretation of the data; or in the preparation, review, or approval of the manuscript.
Previous Presentation: This study was presented at the American Head and Neck Society 2011 Annual Meeting; April 27, 2011; Chicago, Illinois.