Accepted for Publication: July 8, 2013.
Published Online: March 5, 2014. doi:10.1001/jamasurg.2013.3643.
Study concept and design: Jacob, Frampton, Stebbing, Jiao.
Acquisition of data: Gall, Jacob, Frampton, Kyriakides, Castellano, Jiao.
Analysis and interpretation of data: Gall, Frampton, Krell, Stebbing, Jiao.
Drafting of the manuscript: Gall, Frampton, Krell, Stebbing, Jiao.
Critical revision of the manuscript for important intellectual content: Jacob, Frampton, Krell, Kyriakides, Castellano, Stebbing, Jiao.
Statistical analysis: Gall, Frampton, Jiao.
Obtained funding: Castellano, Stebbing, Jiao.
Administrative, technical, and material support: Jacob, Kyriakides, Jiao.
Study supervision: Krell, Stebbing, Jiao.
Conflict of Interest Disclosures: None reported.
Funding/Support: This work was supported by the Alliance Family Foundation.
Role of the 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.