Authors: A P Fitzpatrick; H D Kourouyan; A Siu; R J Lee; M D Lesh; L M Epstein; J C Griffin; M M Scheinman Journal: Am Heart J Date: 1996-03 Impact factor: 4.749
Authors: M Brignole; L Gianfranchi; C Menozzi; P Alboni; G Musso; M G Bongiorni; M Gasparini; A Raviele; G Lolli; N Paparella; S Acquarone Journal: Circulation Date: 1997-10-21 Impact factor: 29.690