1. From the Division of Epidemiology (J.M.P., D.K.A., L.D.A.), School of Public Health, University of Minnesota, Minneapolis, Minn; Section of Preventive Medicine and Epidemiology (R.H.M.), Boston University School of Medicine, Boston, Mass; Department of Psychiatry (H.C.), University of Utah, Salt Lake City, Utah; Department of Public Health Sciences (S.S.R.), Wake Forest University School of Medicine, Winston-Salem, NC; Division of Biostatistics (M.A.P.), Washington University Medical School, Saint...