1. Departments of Biochemistry and Molecular Biology (S.P.C., T.W.G.), Division of Gastroenterology and Hepatology, Medical University of South Carolina, Charleston, South Carolina 29425
2. Departments of Medicine (P.M.W., M.A.P., A.D., G.A., T.W.G.) Division of Gastroenterology and Hepatology, Medical University of South Carolina, Charleston, South Carolina 29425