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Gordon EP, Schnittger I, Fitzgerald PJ, Williams P, Popp RL.Gordon EP, et al. Among authors: schnittger i.J Am Coll Cardiol. 1983 Sep;2(3):506-13. doi: 10.1016/s0735-1097(83)80278-2.J Am Coll Cardiol. 1983.PMID: 6875114Free article.
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