Authors: C A Nienaber; Y von Kodolitsch; V Nicolas; V Siglow; A Piepho; C Brockhoff; D H Koschyk; R P Spielmann Journal: N Engl J Med Date: 1993-01-07 Impact factor: 91.245
Authors: R Erbel; H Oelert; J Meyer; M Puth; S Mohr-Katoly; D Hausmann; W Daniel; S Maffei; A Caruso; F E Covino Journal: Circulation Date: 1993-05 Impact factor: 29.690