Accepted for Publication: December 10, 2012.
Published Online: June 19, 2013. doi:10.1001/jamasurg.2013.2356.
Acquisition of data: Bhayani.
Analysis and interpretation of data: Bhayani, Gupta, and Reavis.
Drafting of the manuscript: Bhayani, Gupta, Dunst, Kurian, and Swanström.
Critical revision of the manuscript for important intellectual content: Gupta, Dunst, Kurian, Reavis, and Swanström.
Statistical analysis: Bhayani, Gupta, and Kurian.
Administrative, technical, and material support: Bhayani.
Supervision: Bhayani, Gupta, Dunst, Reavis, and Swanström.
Conflict of Interest Disclosures: None reported.
Additional Contributions: Lisa Leeth, Angi Gill, Maria Cassera, Dory Segev, and Cathy Betzer provided invaluable analytic and logistical support in this project.