Beneficial effect of long-term use of a beta-blocker in patients before acute myocardial infarction - Bortolotto, L A; Ramires, José Antônio Franchini; Serrano Junior, C V; Cesar, L A M; Solimene, M C; Luz, Protásio Lemos da; Pileggi, F (Brazilian Journal of Medical and Biological Research, 1995)