Affiliation: | (1) Department of Internal Medicine, Biomedical Science Research Building Rm 1526, University of Michigan Medical School, Ann Arbor, Michigan 48109, USA;(2) Molecular Mechanisms of Disease Program, Biomedical Science Research Building Rm 1526, University of Michigan Medical School, Ann Arbor, Michigan 48109, USA;(3) Gastroenterology Section at the Ann Arbor VA Medical Center, Ann Arbor, Michigan 48105, USA |