1 Department of Surgery, University of California-Davis Medical Center, Sacramento, California.
2 Department of Surgery, Division of Bariatric and Minimally Invasive Surgery, the Medical School of Temple University/St Luke's University Health Network, Allentown, Pennsylvania.
3 Department of Surgery, Yale University School of Medicine, New Haven, Connecticut.
4 Division of Minimally Invasive and Bariatric Surgery, Penn State Hershey Medical Center, Hershey, Pennsylvania. Electronic address: arogers@pennstatehealth.psu.edu.