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Boyd NF, Byng JW, Jong RA, Fishell EK, Little LE, Miller AB, Lockwood GA, Tritchler DL, Yaffe MJ.Boyd NF, et al. Among authors: yaffe mj.J Natl Cancer Inst. 1995 May 3;87(9):670-5. doi: 10.1093/jnci/87.9.670.J Natl Cancer Inst. 1995.PMID: 7752271