1. Department of Medicine; Baylor College of Medicine; Houston TX USA
2. Section of Gastroenterology and Hepatology; Baylor College of Medicine and Michael E. DeBakey Veterans Affairs Medical Center; Houston TX USA
3. Center for Innovations in Quality, Effectiveness and Safety (IQuESt); Michael E. DeBakey Veterans Affairs Medical Center; Houston TX USA
4. Section of Health Services Research; Department of Medicine; Baylor College of Medicine; Houston TX USA