Affiliation: | 1. Department of Medicine, Duke University Medical Center, Durham, NC, USA;2. Department of Internal Medicine, Division of Gastroenterology and Hepatology, Saint Louis University School of Medicine, St. Louis, MO, USA;3. Department of Pathology, Duke University Medical Center, Durham, NC, USA;4. Department of Cell Biology, Duke University Medical Center, Durham, NC, USA;5. Durham VA Medical Center, Durham, NC, USA |