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Marin-Neto JA, Maciel BC, Gallo Júnior L, De Almeida Filho OC, Amorim Dde S.Marin-Neto JA, et al.Arq Bras Cardiol. 1990 Aug;55(2):93-8.Arq Bras Cardiol. 1990.PMID: 2073182Portuguese.