1 Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.
2 Department of Medicine, University of Kentucky, Lexington, Kentucky.
3 Division of Digestive and Liver Diseases, Cedars-Sinai Medical Center, Los Angeles, California.
4 Department of Pathology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts.
5 Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington.
6 Department of Biostatistics, University of Texas MD Anderson Cancer Center, Houston, Texas.
7 Division of Digestive Diseases and Nutrition, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland.
8 Department of Pediatrics, University of Minnesota & Masonic Children's Hospital, Minneapolis, Minnesota.
9 Department of Gastroenterology, Hepatology, and Nutrition, University of Texas MD Anderson Cancer Center, Houston, Texas.
10 Division of Gastroenterology, Hepatology, and Nutrition and The James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, Ohio.
11 Division of General Surgery, Baylor College of Medicine, Houston, Texas.
12 Digestive and Liver Disorders, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana.
13 Division of Gastroenterology, Hepatology, and Nutrition, University of Florida, Gainesville, Florida.
14 Division of Gastroenterology, Hepatology, and Nutrition, The Ohio State University Wexner Medical Center, Columbus, Ohio.
15 Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta, Georgia.
16 Division of Gastroenterology and Hepatology, Department of Medicine, Stanford University School of Medicine, Stanford, California.
17 Cancer Biomarker Research Group, Division of Cancer Prevention, National Cancer Institute, National Institutes of Health, Rockville, Maryland.
18 Department of Radiology and Imaging Sciences, Indiana University School of Medicine, Indianapolis, Indiana.
19 Division of Gastroenterology & Hepatology, Mayo Clinic, Rochester, Minnesota.
20 Division of Research, Kaiser Permanente Northern California, Oakland, California.