1. From the Health Services Research and Development Center for Excellence (B.K.N.), Ann Arbor Veterans Affairs Medical Center, Ann Arbor, Mich; the Department of Internal Medicine (B.K.N., E.R.B.), Division of Cardiovascular Disease, University of Michigan Medical School, Ann Arbor; Flying Buttress Associates (J.H.), Charlottesville, Va; the Section of Health Policy and Administration (E.H.B., H.M.K.), Department of Epidemiology and Public Health, Yale University School of Medicine, New Haven, Conn;...