Accepted for Publication: November 22, 2011.
Author Contributions: Drs Hudacek and Chung 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: Hudacek and Chung. Acquisition of data: Hudacek, Chung, Cusack, Haque, and Hochberg. Analysis and interpretation of data: Hudacek, Chung, Cusack, Haque, and Hochberg. Drafting of the manuscript: Hudacek, Chung, Haque, and Hochberg. Critical revision of the manuscript for important intellectual content: Hudacek and Chung. Study supervision: Chung.
Financial Disclosure: None reported.
Additional Contributions: Pamela Fried, MBA, provided editorial contributions.