1. Division of Hematology-Oncology, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA;
2. Digestive Health Institute, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA;
3. Department of Gastroenterology and Liver Disease, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA;
4. Fred Hutchinson Cancer Center, Seattle, Ohio, USA;
5. Digestive Health Center, University of Washington Medical Center, Seattle, Washington, USA;
6. Division of Gastroenterology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA;
7. Division of Gastroenterology & Hepatology, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA;
8. Department of Gastroenterology, Hepatology & Nutrition, Cleveland Clinic Foundation, Cleveland, Ohio, USA;
9. Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota, USA;
10. Division of Gastroenterology, Barnes-Jewish Hospital, Washington University in St. Louis, St. Louis, Missouri, USA;
11. Division of Gastroenterology, Hospital of the University of Pennsylvania, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA;
12. Department of Medicine, Columbia University Irving Medical Center, New York, New York, USA;
13. Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA;
14. Department of Pathology, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA.