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Schwartz RS, Holmes DR Jr, Topol EJ.Schwartz RS, et al.J Am Coll Cardiol. 1992 Nov 1;20(5):1284-93. doi: 10.1016/0735-1097(92)90389-5.J Am Coll Cardiol. 1992.PMID: 1401633Free article.Review.
Holmes DR Jr, Schwartz RS, Webster MW.Holmes DR Jr, et al. Among authors: schwartz rs.J Am Coll Cardiol. 1991 May;17(6 Suppl B):14B-22B. doi: 10.1016/0735-1097(91)90934-2.J Am Coll Cardiol. 1991.PMID: 2016471Free article.Review.