Authors: S G Sawada; D S Segar; T Ryan; S E Brown; A M Dohan; R Williams; N S Fineberg; W F Armstrong; H Feigenbaum Journal: Circulation Date: 1991-05 Impact factor: 29.690
Authors: D B Pryor; L Shaw; C B McCants; K L Lee; D B Mark; F E Harrell; L H Muhlbaier; R M Califf Journal: Ann Intern Med Date: 1993-01-15 Impact factor: 25.391