Accepted for Publication: July 15, 2012.
Published Online: February 18, 2013. doi:10.1001/jamainternmed.2013.3171
Author Contributions: Each author had full access to all the data in the study and takes full responsibility for the integrity of the data and the accuracy of the data analysis. Study concept and design: Hauptman, Chibnall, and Armbrecht. Acquisition of data: Hauptman, Guild, and Armbrecht. Analysis and interpretation of data: Hauptman, Chibnall, and Armbrecht. Drafting of the manuscript: Hauptman, Chibnall, and Armbrecht. Critical revision of the manuscript for important intellectual content: Chibnall, Guild, and Armbrecht. Statistical analysis: Hauptman, Chibnall, and Armbrecht. Obtained funding: Hauptman. Administrative, technical, and material support: Hauptman, Chibnall, and Armbrecht. Study supervision: Hauptman.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was funded by the President's Research Fund and the Joseph C. Sansone Fund in Cardiovascular Outcomes Research, both at Saint Louis University.
Role of the Sponsors: The funding agencies had no role in the design and conduct of the study; collection, management, analysis, and interpretation of data; and preparation, review, or approval of the manuscript.