1. Division of Gastroenterology and Hepatology; University of Michigan; Ann Arbor MI
2. Section of Gastroenterology and Hepatology, Department of Medicine; Baylor College of Medicine; Houston TX
3. Center for Innovations in Quality, Effectiveness and Safety; Michael E. DeBakey Veterans Affairs Medical Center; Houston TX
4. Section of Health Services Research, Department of Medicine; Baylor College of Medicine; Houston TX
5. Division of Hepatology; Baylor University Medical Center; Dallas TX
6. Division of Gastroenterology; California Pacific Medical Center; San Francisco CA
7. Division of Pediatric Gastroenterology; Children's Hospital at Montefiore; Bronx NY
8. Division of Gastroenterology; Mayo School of Medicine; Rochester MN
9. Division of Gastroenterology; Washington University School of Medicine; St. Louis MO
10. Taubman Health Sciences Library; University of Michigan; Ann Arbor MI
11. Division of Gastroenterology; Houston Methodist; Houston TX
12. Department of Medicine; Georgetown University; Washington DC
13. Division of Gastroenterology and Transplantation Institute; Loma Linda University; Loma Linda CA