Published Online: June 18, 2012. doi:10.1001/archinternmed.2012.1998
Author Contributions: Dr Jena had full access to all 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: Jena, Meltzer, and Arora. Acquisition of data: Press and Arora. Analysis and interpretation of data: Jena, Meltzer, and Arora. Drafting of the manuscript: Jena and Arora. Critical revision of the manuscript for important intellectual content: Jena, Meltzer, Press, and Arora. Statistical analysis: Jena. Administrative, technical, and material support: Arora. Study supervision: Meltzer and Arora.
Financial Disclosure: None reported.
Funding/Support: This research was supported in part by grants from the National Institutes of Health and the Agency for Healthcare Research and Quality (Dr Meltzer) and from the Accreditation Council for Graduate Medical Education and the American Board of Internal Medicine Foundation (Dr Arora).
Role of the Sponsors: Funding agencies were not involved in study design; collection, management, analysis, or interpretation of data; or manuscript preparation.