1 Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California; VA Greater Los Angeles Healthcare System, Division of Gastroenterology, Hepatology and Parenteral Nutrition, Los Angeles, California.
2 Division of Gastroenterology and Hepatology, Department of Medicine, University of Colorado Anschutz Medical Center, Aurora, Colorado.
3 Division of Gastroenterology and Hepatology, Department of Medicine, Moores Cancer Center, University of California San Diego, San Diego, California; Herbert Wertheim School of Public Health and Human Longevity Science, University of California San Diego, San Diego, California.
4 Division of Gastroenterology and Hepatology, Department of Medicine, University of Colorado Anschutz Medical Center, Aurora, Colorado; Rocky Mountain Regional Veterans Affairs Medical Center, Division of Gastroenterology, Aurora, Colorado. Electronic address: [email protected].