Published Online: January 12, 2015. doi:10.1001/jamainternmed.2014.7392.
Study concept and design: Kincaid, Neuman.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: Kincaid, Neuman.
Critical revision of the manuscript for important intellectual content: Fleisher, Neuman.
Statistical analysis: Kincaid, Neuman.
Obtained funding: Kincaid, Neuman.
Administrative, technical, or material support: Neuman.
Study supervision: Neuman.
Conflict of Interest Disclosures: None reported.
Funding/Support: This work was supported by grant K08 AG043548-03 from the National Institute on Aging (Dr Neuman) and the Foundation for Anesthesia Education and Research (Ms Kincaid).
Role of the Funder/Sponsor: The funding sources had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.