Affiliation: | Current affiliations: Division of Gastroenterology (G.A.C.), Indiana University, Indianapolis, Indiana, Department of Medicine (M.A., S.A.E., S.S.J., R.R.A.), Division of Gastroenterology, Washington University, St. Louis, Missouri, Department of Medicine (R.P., D.K.P.), Division of Gastroenterology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA |