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Tilkemeier PL, Travin MI, Heller GV.Tilkemeier PL, et al. Among authors: heller gv.R I Med J (1976). 1991 Nov;74(11):519-26.R I Med J (1976). 1991.PMID: 1798895No abstract available.
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.