Authors: G V Herdy; C A Pinto; M C Olivaes; E A Carvalho; H Tchou; R Cosendey; R Ribeiro; F Azeredo; D de Souza; A H Herdy; V G Lopes Journal: Arq Bras Cardiol Date: 1999-05 Impact factor: 2.000
Authors: L G Veasy; S E Wiedmeier; G S Orsmond; H D Ruttenberg; M M Boucek; S J Roth; V F Tait; J A Thompson; J A Daly; E L Kaplan Journal: N Engl J Med Date: 1987-02-19 Impact factor: 91.245