Published Online: November 13, 2011. doi:10.1001/jama.2011.1615
Author Contributions: Dr Walkey had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis.
Study concept and design: Walkey, Benjamin.
Acquisition of data: Walkey, Ghobrial.
Analysis and interpretation of data: Walkey, Wiener, Curtis.
Drafting of the manuscript: Walkey.
Critical revision of the manuscript for important intellectual content: Walkey, Wiener, Ghobrial, Curtis, Benjamin.
Statistical analysis: Walkey.
Administrative, technical, or material support: Walkey.
Study supervision: Benjamin.
Conflict of Interest Disclosures: All authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest and none were reported.
Funding/Support: This study was funded by grant UL1RR025771 from the Boston University Clinical Translational Research Institute (Dr Walkey); by the Evans Center for Interdisciplinary Biomedical Research ARC on Atrial Fibrillation at Boston University (http://www.bumc.bu.edu/evanscenteribr/) (Drs Walkey, Curtis, and Benjamin); by National Heart, Lung, and Blood Institute grants 1R01HL092577 and 1RC1HL101056 (Dr Benjamin) and 1R01 HL102214 (Drs Curtis and Benjamin); by National Cancer Institute grant K07 CA138772 (Dr Wiener); and by the Department of Veterans Affairs (Dr Wiener).
Role of the Sponsors: No funding organization had a role in the design and conduct of the study; in the collection, analysis, and interpretation of the data; or in the preparation, review, or approval of the manuscript.