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McDonald KM, Yoshiyama M, Francis GS, Ugurbil K, Cohn JN, Zhang J.McDonald KM, et al.J Am Coll Cardiol. 1994 Mar 1;23(3):786-93. doi: 10.1016/0735-1097(94)90769-2.J Am Coll Cardiol. 1994.PMID: 8113565Free article.
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