Published Online: October 15, 2012. doi:10.1001/archinternmed.2012.4448
Author Contributions:Study concept and design: Ladapo and Davidson. Acquisition of data: Ye. Analysis and interpretation of data: Ladapo, Shaffer, and Fang. Drafting of the manuscript: Ladapo and Davidson. Critical revision of the manuscript for important intellectual content: Ladapo, Shaffer, Fang, Ye, and Davidson. Statistical analysis: Ladapo and Fang. Obtained funding: Davidson. Administrative, technical, and material support: Shaffer and Davidson. Study supervision: Davidson.
Financial Disclosure: None reported.
Funding/Support: This study was supported by National Heart, Lung, and Blood Institute grants HC-25197, HL-088117, HL-101663, and HL-84034. Support for Dr Shaffer was provided by Health Resources and Services Administration grant T32 HP10260 and American Heart Association grant 12CRP8870004. Support for Dr Ye was provided by an American College of Cardiology/Merck Research Fellowship award and by National Institutional of Health grant T32HL007854-16.