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Ning JP, Yu MC, Wang QS, Henderson BE.Ning JP, et al. Among authors: yu mc.J Natl Cancer Inst. 1990 Feb 21;82(4):291-6. doi: 10.1093/jnci/82.4.291.J Natl Cancer Inst. 1990.PMID: 2299678
Wu AH, Henderson BE, Pike MC, Yu MC.Wu AH, et al. Among authors: yu mc.J Natl Cancer Inst. 1985 Apr;74(4):747-51.J Natl Cancer Inst. 1985.PMID: 3857370