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Cohen DJ, Krumholz HM, Sukin CA, Ho KK, Siegrist RB, Cleman M, Heuser RR, Brinker JA, Moses JW, Savage MP, et al.Cohen DJ, et al.Circulation. 1995 Nov 1;92(9):2480-7. doi: 10.1161/01.cir.92.9.2480.Circulation. 1995.PMID: 7586348Clinical Trial.