1. From the Center for Healthcare Organization and Implementation Research, Edith Nourse Rogers Memorial VA Medical Center, Bedford, MA (D.R.B., A.S.A., E.M.H., A.O., J.I.R., S.Z., G.K.J., A.J.R.); Section of General Internal Medicine, Department of Medicine, Boston University School of Medicine, MA (L.M.E., D.R.B., A.S.A., E.M.H., A.J.R.); Section of Gastroenterology, Granite Medical Group, Boston University Medical Center, MA (D.S.M.); Department of Health Policy and Management, Boston University...