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Gordon PC, Gibson CM, Cohen DJ, Carrozza JP, Kuntz RE, Baim DS.Gordon PC, et al. Among authors: cohen dj.J Am Coll Cardiol. 1993 Apr;21(5):1166-74. doi: 10.1016/0735-1097(93)90241-r.J Am Coll Cardiol. 1993.PMID: 8459072Free article.