1. From Kaiser Permanente Northern California (A.S.G., S.H.S.), University of California, San Francisco, Calif; Kaiser Permanente Colorado (D.J.M., F.A.M., J.S.R.), University of Colorado, Denver, Colo; National Heart, Lung and Blood Institute (B.W., J.O.), Bethesda, Md; Henry Ford Health System (A.C-B.), Detroit, Mich; Marshfield Clinic Research Foundation (R.T.G.), University of Wisconsin, Madison, Wis; Geisinger Health System (R.D.L.), Danville, Penn; Department of Ambulatory Care and Prevention,...