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Grines CL, Topol EJ, Bates ER, Juni JE, Walton JA Jr, O'Neill WW.Grines CL, et al.Am Heart J. 1988 Jan;115(1 Pt 1):1-7. doi: 10.1016/0002-8703(88)90510-8.Am Heart J. 1988.PMID: 2962478Free article.Clinical Trial.