Affiliation: | 1. Division of Gastroenterology and Hepatology, University of Michigan, Ann 2. Arbor, MI, USA;3. Institute for Healthcare Policy and Innovation, Ann Arbor, MI, USA;4. Veterans Affairs Hospital, Ann Arbor, MI, USA;5. Division of Gastroenterology and Hepatology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA;6. Veterans Affairs Center for Clinical Management Research (CCMR), Ann Arbor, MI, USA |