| Affiliation: | 1. Department of Surgery, George Washington University, Washington, DC;2. Department of Radiology, Case Western Reserve University, Cleveland, OH;3. Department of Surgery, Johns Hopkins University, Baltimore, MD;4. Department of Surgery, University of Miami, Miami, FL;5. Department of Surgery, Uniformed Health Services University of the Health Sciences, Bethesda, MD;6. Department of Surgery, University of Massachusetts, Worcester, MA;7. Division of Gastroenterology, Department of Medicine, University of Pennsylvania, Philadelphia, PA;8. Department of Surgery, Cleveland Clinic, Cleveland, OH |
