Authors: D Grady; S M Rubin; D B Petitti; C S Fox; D Black; B Ettinger; V L Ernster; S R Cummings Journal: Ann Intern Med Date: 1992-12-15 Impact factor: 25.391
Authors: M H Criqui; G Heiss; R Cohn; L D Cowan; C M Suchindran; S Bangdiwala; S Kritchevsky; D R Jacobs; H K O'Grady; C E Davis Journal: N Engl J Med Date: 1993-04-29 Impact factor: 91.245