Authors: G H Guyatt; M J Sullivan; P J Thompson; E L Fallen; S O Pugsley; D W Taylor; L B Berman Journal: Can Med Assoc J Date: 1985-04-15 Impact factor: 8.262
Authors: A M Feldman; M R Bristow; W W Parmley; P E Carson; C J Pepine; E M Gilbert; J E Strobeck; G H Hendrix; E R Powers; R P Bain Journal: N Engl J Med Date: 1993-07-15 Impact factor: 91.245
Authors: D J van Veldhuisen; A J Man in 't Veld; P H Dunselman; D J Lok; H J Dohmen; J C Poortermans; A J Withagen; W H Pasteuning; J Brouwer; K I Lie Journal: J Am Coll Cardiol Date: 1993-11-15 Impact factor: 24.094