1 Division of GI and Liver Diseases, Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California.
2 Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana.
3 Center for Drug Interactions and Immunology, Division of Infectious Diseases, Department of Medicine, Department of Dermatology, Vanderbilt University Medical Center, Nashville, Tennessee.
4 Laboratory of Pathology, National Cancer Institute, Bethesda, Maryland.
5 Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana. Electronic address: nchalasa@iu.edu.