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Fischman DL, Savage MP, Leon MB, Schatz RA, Ellis SG, Cleman MW, Teirstein P, Walker CM, Bailey S, Hirshfeld JW Jr, et al.Fischman DL, et al.J Am Coll Cardiol. 1991 Nov 15;18(6):1445-51. doi: 10.1016/0735-1097(91)90673-w.J Am Coll Cardiol. 1991.PMID: 1939944Free article.