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MacEwen EG, Kurzman ID, Rosenthal RC, Smith BW, Manley PA, Roush JK, Howard PE.MacEwen EG, et al. Among authors: kurzman id.J Natl Cancer Inst. 1989 Jun 21;81(12):935-8. doi: 10.1093/jnci/81.12.935.J Natl Cancer Inst. 1989.PMID: 2733037