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Kalman JM, Olgin JE, Karch MR, Hamdan M, Lee RJ, Lesh MD.Kalman JM, et al. Among authors: olgin je.J Am Coll Cardiol. 1998 Feb;31(2):451-9. doi: 10.1016/s0735-1097(97)00492-0.J Am Coll Cardiol. 1998.PMID: 9462592Free article.