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Musewe NN, Alexander DJ, Teshima I, Smallhorn JF, Freedom RM.Musewe NN, et al.J Am Coll Cardiol. 1990 Mar 1;15(3):673-7. doi: 10.1016/0735-1097(90)90644-5.J Am Coll Cardiol. 1990.PMID: 2303637Free article.