Accepted for Publication: May 22, 2010.
Author Contributions: Study concept and design: Malas, Glebova, and Perler. Acquisition of data: Malas, Choo, Qazi, Meguid, and Reifsnyder. Analysis and interpretation of data: Malas and Freischlag. Drafting of the manuscript: Malas, Choo, Qazi, Glebova, Meguid, and Perler. Critical revision of the manuscript for important intellectual content: Malas, Reifsnyder, Perler, and Freischlag. Administrative, technical, and material support: Malas, Choo, Qazi, Meguid, and Reifsnyder. Study supervision: Malas, Perler, and Freischlag.
Financial Disclosure: None reported.