1 is a Staff Physician, and is Chief of Gastroenterology and Associate Chief of Medicine, both at VA Ann Arbor Healthcare System. is a Physician Affiliate and Director of the Cooperative Studies Program Epidemiology Centers at Durham VAMC in North Carolina. is Chief of Hepatology and Liver Transplantation at Hunter Holmes McGuire VAMC. Christine Hunt is an Adjunct Associate Professor of Medicine at Duke University Medical Center in Durham. Lisa Glass is an Assistant Professor and Grace Su is a Professor of Medicine, both at the University of Michigan Medical School in Ann Arbor. Michael Fuchs is Professor of Medicine at Virginia Commonwealth University in Richmond.