1. Division of Gastroenterology & Hepatology; Mayo Clinic College of Medicine; Rochester Minnesota
2. Cancer Research Program, JLC-BBRI; North Carolina Central University; Durham North Carolina
3. Center for Esophageal Disease and Swallowing, Division of Gastroenterology and Hepatology, Department of Medicine; University of North Carolina at Chapel Hill; Chapel Hill North Carolina
4. Surgical Oncology Research Laboratory; Peter MacCallum Cancer Centre; East Melbourne Australia
5. Department of Surgery (St. Vincent's Hospital); University of Melbourne; Melbourne Australia
6. Sir Peter MacCallum Department of Oncology; University of Melbourne; Melbourne Australia
7. Department of Clinical Medicine and Surgery, Gastroenterology Unit; University Federico II; Naples Italy
8. Surgical Oncology Research; Vanderbilt University Medical Center; Nashville Tennessee
9. Department of Epidemiology; The University of Texas MD Anderson Cancer Center; Houston Texas
10. Division of Digestive Diseases and Nutrition; University of Oklahoma Health Sciences Center; Oklahoma City Oklahoma
11. Department of Gastroenterology; General Hospital of Jinan Military Command; Jinan China
12. Department of Pathology; University of Washington; Seattle Washington