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Heller GV, Ahmed I, Tilkemeier PL, Barbour MM, Garber CE.Heller GV, et al.Am Heart J. 1992 Apr;123(4 Pt 1):909-16. doi: 10.1016/0002-8703(92)90695-r.Am Heart J. 1992.PMID: 1549999
Heller GV, Herman SD, Travin MI, Baron JI, Santos-Ocampo C, McClellan JR.Heller GV, et al.J Am Coll Cardiol. 1995 Nov 1;26(5):1202-8. doi: 10.1016/0735-1097(95)00329-0.J Am Coll Cardiol. 1995.PMID: 7594033Free article.Clinical Trial.