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Chang AY, Kim K, Glick J, Anderson T, Karp D, Johnson D.Chang AY, et al.J Natl Cancer Inst. 1993 Mar 3;85(5):388-94. doi: 10.1093/jnci/85.5.388.J Natl Cancer Inst. 1993.PMID: 8094467Clinical Trial.
Law A, Karp DD, Dipetrillo T, Daly BT.Law A, et al. Among authors: karp dd.Cancer. 2001 Jul 1;92(1):160-4. doi: 10.1002/1097-0142(20010701)92:1<160::aid-cncr1304>3.0.co;2-x.Cancer. 2001.PMID: 11443622Clinical Trial.