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Abdel-Salam M, Mayall BH, Chew K, Silverman S Jr, Greenspan JS.Abdel-Salam M, et al. Among authors: greenspan js.Cancer. 1988 Nov 1;62(9):1981-7. doi: 10.1002/1097-0142(19881101)62:9<1981::aid-cncr2820620918>3.0.co;2-o.Cancer. 1988.PMID: 3167810