Accepted for Publication: March 16, 2015.
Published Online: June 24, 2015. doi:10.1001/jamasurg.2015.1108.
Study concept and design: Sacks, Lawson, Dawes, Zingmond, Ko.
Acquisition, analysis, or interpretation of data: Sacks, Lawson, Dawes, Russell, Maggard-Gibbons, Zingmond.
Drafting of the manuscript: Sacks.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Sacks, Lawson, Dawes, Russell, Zingmond, Ko.
Administrative, technical, or material support: Dawes.
Study supervision: Russell, Maggard-Gibbons, Zingmond, Ko.
Conflict of Interest Disclosures: None reported.
Funding/Support: Drs Sacks and Dawes were supported by the Robert Wood Johnson Foundation Clinical Scholars Program at the University of California, Los Angeles.
Role of the Funder/Sponsor: The funder 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.