Authors: S Slogoff; A S Keats; D A Cooley; G J Reul; O H Frazier; D A Ott; J M Duncan; J J Livesay Journal: Ann Thorac Surg Date: 1986-07 Impact factor: 4.330
Authors: B Hedblad; S Juul-Möller; K Svensson; B S Hanson; S O Isacsson; L Janzon; S E Lindell; B Steen; B W Johansson Journal: Eur Heart J Date: 1989-02 Impact factor: 29.983
Authors: K E Raby; L Goldman; M A Creager; E F Cook; M C Weisberg; A D Whittemore; A P Selwyn Journal: N Engl J Med Date: 1989-11-09 Impact factor: 91.245