Submitted for Publication: December 7, 2010; final revision received February 7, 2011; accepted April 10, 2011.
Author Contributions: Mr Philpott and Dr Thamboo 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: Philpott, Thamboo, Clark, and Javer. Acquisition of data: Philpott, Thamboo, Zheng, Lai, Badri, Akbari, and Clark. Analysis and interpretation of data: Philpott, Thamboo, Lai, and Clark. Drafting of the manuscript: Philpott, Thamboo, Zheng, Lai, and Clark. Critical revision of the manuscript for important intellectual content: Philpott, Thamboo, Badri, Akbari, Clark, and Javer. Statistical analysis: Thamboo, Lai, and Clark. Administrative, technical, and material support: Zheng, Lai, Badri, and Akbari. Study supervision: Philpott, Thamboo, and Javer.
Financial Disclosure: None reported.
Previous Presentations: This study was presented at the British Rhinological Society meeting; May 15, 2009; Cheltenham, United Kingdom, and the Royal Society of Medicine, Section of Laryngology and Rhinology Meeting; March 5, 2010; London, United Kingdom.