Accepted for Publication: February 26, 2012.
Author Contributions: All of the authors had full access to all of 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: Prajapati, Huang, and Gellis. Acquisition of data: Prajapati and Huang. Analysis and interpretation of data: Prajapati, Huang, Dillon, and Liang. Drafting of the manuscript: Prajapati. Critical revision of the manuscript for important intellectual content: Prajapati, Huang, Dillon, Gellis, and Liang. Study supervision: Huang, Dillon, and Liang.
Financial Disclosure: None reported.