BURCHFIEL, CECIL M; HIGGINS, MILLICENT W.; KELLER, JACOB B.; BUTLER, WILLIAM J; DONAHUE, RICHARD P.; BURCHFIEL CECIL M; Department of Preventive Medicine and Biometrics, University of Colorado Health Sciences Center; HIGGINS MILLICENT W.; Epidemiology Cand Biometry Program, Division of Epidemiology and Clinical Applications, National Heart, Lung, and Blood Institute; KELLER JACOB B.; Epidemiology Cand Biometry Program, Division of Epidemiology and Clinical Applications, National Heart, Lung, and Blood Institute; BUTLER WILLIAM J; Department of Biostatistics, School of Public Health, University of Michigan; DONAHUE RICHARD P.; Epidemiology Cand Biometry Program, Division of Epidemiology and Clinical Applications, National Heart, Lung, and Blood Institute