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Katz ER, Varni JW.Katz ER, et al. Among authors: varni jw.Cancer. 1993 May 15;71(10 Suppl):3314-9. doi: 10.1002/1097-0142(19930515)71:10+<3314::aid-cncr2820711729>3.0.co;2-1.Cancer. 1993.PMID: 8490874