1. From the Ann Arbor VA Healthcare System (D.A.L.), Departments of Medicine and Neurology, University of Michigan, Ann Arbor, Mich; Department of Medicine (D.A.L., C.E.L., O.D.W., M.M.S., D.A.C., Y.K.), University of Alabama at Birmingham School of Medicine, Birmingham, Ala; Department of Preventive Medicine (K.L.), Feinberg School of Medicine, Northwestern University, Chicago, Ill; Division of Epidemiology and Community Health (D.R.J.), School of Public Health, University of Minnesota, Minneapolis,...