Published Online: June 3, 2013. doi:10.1001/jamainternmed.2013.6483.
Acquisition of data: Thein, Dakheel-Ali.
Analysis and interpretation of data: Cohen-Mansfield, Marx, Jensen.
Drafting of the manuscript: Cohen-Mansfield, Thein.
Critical revision of the manuscript for important intellectual content: Cohen-Mansfield, Marx, Dakheel-Ali, Jensen.
Statistical analysis: Cohen-Mansfield, Dakheel-Ali.
Obtained funding: Cohen-Mansfield.
Administrative, technical, and material support: Cohen-Mansfield, Thein.
Study supervision: Cohen-Mansfield. Marx.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was supported by grant R01 AG010172-10A2 from the National Institutes of Health and grant 31583295000 from the Minerva-Stiftung Foundation.