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Bruce RA, Fisher LD, Pettinger M, Weiner DA, Chaitman BR.Bruce RA, et al.Circulation. 1988 Apr;77(4):897-905. doi: 10.1161/01.cir.77.4.897.Circulation. 1988.PMID: 3349585
Bruce EH, Frederick R, Bruce RA, Fisher LD.Bruce EH, et al. Among authors: bruce ra.Am J Cardiol. 1976 Jan;37(1):53-60. doi: 10.1016/0002-9149(76)90499-9.Am J Cardiol. 1976.PMID: 942676