1 Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine at UCLA and, Department of Medicine and VA HSR&D Center for the Study of Healthcare Innovation, Implementation and Policy (CSHIIP), VA Greater Los Angeles Healthcare System, Los Angeles, California. Electronic address: fmay@mednet.ucla.edu.
2 Department of Medicine, Section of Gastroenterology, Minneapolis VA Medical Center and, Department of Medicine, University of Minnesota, Minneapolis, Minnesota.