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Choy AT, van Hasselt CA, Chisholm EM, Williams SR, King WW, Li AK.Choy AT, et al. Among authors: chisholm em.Cancer. 1992 Aug 15;70(4):815-20. doi: 10.1002/1097-0142(19920815)70:4<815::aid-cncr2820700416>3.0.co;2-q.Cancer. 1992.PMID: 1643613
Gaya AM, Chisholm EM, Scott HJ, Donaldson DR.Gaya AM, et al. Among authors: chisholm em.Postgrad Med J. 1997 Nov;73(865):739-40. doi: 10.1136/pgmj.73.865.739.Postgrad Med J. 1997.PMID: 9519193Free PMC article.