Published Online: April 21, 2014. doi:10.1001/jamainternmed.2014.1059.
Study concept and design: Manrai, Bhatia, Strymish, Jain.
Acquisition, analysis, or interpretation of data: Manrai, Bhatia, Kohane.
Drafting of the manuscript: Manrai, Bhatia.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Manrai, Bhatia.
Study supervision: Strymish, Jain.
Conflict of Interest Disclosures: None reported.
Additional Contributions: Paul R. Conlin, MD, VA Boston Healthcare System, helped in designing and executing the study.