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Solid tumourstAll tumours Observed Expected Observed Expectcd Observed Expected p Valuet 1961-7(0 9 10.9 16 12-3 25 23-2 NS 1971-85 26 17-5 28 16-4 54 33-9 0-05 tAll cases of leukaemia and non-Hodgkin's lNmphoma.,AII other cases excluding those of leukaemia and non-Hodgkin's Iymphoma.tUor all results (observed v expected).
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L J Kinlen (1990) studied this question.
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