Accepted for Publication: May 10, 2013.
Published Online: January 15, 2014. doi:10.1001/jamasurg.2013.3566.
Study concept and design: Wakeam, Weissman.
Acquisition of data: Wakeam, Hevelone, Maine, Swain.
Analysis and interpretation of data: Wakeam, Hevelone, Maine, Swain, Lipsitz, Finlayson, Weissman.
Drafting of the manuscript: Wakeam, Maine, Swain.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Wakeam, Hevelone, Lipsitz.
Obtained funding: Wakeam, Ashley, Weissman.
Administrative, technical, or material support: Finlayson, Ashley, Weissman.
Study supervision: Finlayson, Weissman.
Conflict of Interest Disclosures: None reported.
Funding/Support: This work was funded by grant 20120369 from The Commonwealth Fund.
Role of the Sponsor: The funding source had no role in the design and conduct of the study; collection, management, analysis, or interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Disclaimer: The content is solely the responsibility of the authors and does not necessarily represent the official views of the sponsor.
Correction: This article was corrected for an error in an author name on January 28, 2014.