1 Chief, Gastroenterology and Hepatology, Baylor College of Medicine, Houston, Texas; Clinical Epidemiology and Comparative Effectiveness Program, Section of Health Services Research, Center for Innovations in Quality, Effectiveness, and Safety, Houston, Texas; Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas. Electronic address: kanwal@bcm.edu.
2 Chief, Gastroenterology and Hepatology, Baylor College of Medicine, Houston, Texas; Clinical Epidemiology and Comparative Effectiveness Program, Section of Health Services Research, Center for Innovations in Quality, Effectiveness, and Safety, Houston, Texas; Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas.