Accepted for Publication: January 18, 2012.
Published Online: April 16, 2012. doi:10.1001/archsurg.2012.496
Author Contributions:Study concept and design: Buchs, Bianco, Ayloo, Elli, and Giulianotti. Acquisition of data: Buchs, Addeo, and Gorodner. Analysis and interpretation of data: Buchs, Addeo, Oberholzer, and Benedetti. Drafting of the manuscript: Buchs, Addeo, and Ayloo. Critical revision of the manuscript for important intellectual content: Addeo, Bianco, Gorodner, Ayloo, Elli, Oberholzer, Benedetti, and Giulianotti. Statistical analysis: Buchs and Addeo. Administrative, technical, and material support: Bianco, Gorodner, and Giulianotti. Study supervision: Addeo, Ayloo, Elli, Oberholzer, Benedetti, and Giulianotti.
Financial Disclosure: None reported.
Previous Presentation: This study was presented at the 2nd Worldwide Meeting of Clinical Robotic Surgery Association; October 2, 2010; Chicago, Illinois.
Additional Contribution: We thank Michelle Secic from Secic Statistical Consulting Inc for the statistical work.