Accepted for Publication: May 24, 2013.
Published Online: September 9, 2013. doi:10.1001/jamainternmed.2013.10261.
Study concept and design: Huynh, Kleerup, Wenger.
Acquisition of data: Huynh, Guse, Wenger.
Analysis and interpretation of data: Huynh, Kleerup, Wiley, Savitsky, Garber, Wenger.
Drafting of the manuscript: Huynh, Kleerup, Wiley, Savitsky, Guse.
Critical revision of the manuscript for important intellectual content: Huynh, Kleerup, Savitsky, Garber, Wenger.
Statistical analysis: Huynh, Kleerup, Wiley, Savitsky.
Obtained funding: Wenger.
Administrative, technical, or material support: Huynh.
Study supervision: Huynh, Kleerup, Wenger.
Conflict of Interest Disclosures: None reported.
Funding/Support: This project was supported by a donation from Mary Kay Farley to RAND Health. Dr Huynh was supported by a UCLA Kennamer Fellowship (supported by the Parvin Foundation) and the National Institutes of Health Loan Repayment Program.
Role of the Sponsor: The funder played no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; or preparation, review, or approval of the manuscript.
Additional Contributions: Beth Tenpas, MBA, and Andrew Kaufman, MBA, supplied UCLA administrative data.