Abstract
Section of Digestive Diseases, Yale School of Medicine, New Haven, Connecticut; Veterans Affairs Connecticut Healthcare System, West Haven, Connecticut; Veterans Affairs Palo Alto Healthcare System and Stanford University School of Medicine (affiliate), Palo Alto, California; Division of Gastroenterology, McGill University, Montreal, Quebec, Canada; University of California at San Francisco, Veterans Affairs Medical Center, San Francisco, California; University of Leeds, Leeds, United Kingdom
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