1. Division of Surgical Oncology University of South Carolina School of Medicine Greenville South Carolina USA
2. Department of Surgery Saint John's Cancer Institute at Providence St. John's Health Center Santa Monica California USA
3. Division of Surgical Oncology West Virginia University Morgantown West Virginia USA
4. Department of Surgery Medical Data Research Center, Providence Saint Joseph Health Oregon Portland USA
5. Department of Surgery, Division of Surgical Oncology Hunter Holmes McGuire Veterans Affair Medical Center Richmond Virginia USA
6. Department of Surgery, Division of Surgical Oncology University of Nebraska Medical Center Omaha Nebraska USA
7. Department of Surgery, Division of Hepatobiliary and Pancreas Surgery and Islet Cell Transplantation University of California Irvine Medical Center Orange California USA