1. From the Division of Research and Optimal Patient Care, American College of Surgeons (Shah, Knapp, Cohen, Ko)
2. Department of Surgery, The Ohio State University Wexner Medical Center, Columbus, OH (Shah, Brethauer)
3. Department of Surgery, University of California, San Francisco, San Francisco, CA (Wick)
4. Department of Surgery, University of California, Los Angeles, Los Angeles, CA (Ko).