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From Sam Milham:
I smell a rodent. There were 4 brain cancers in the workers in floors 16-17, while according to appendix table 3, 0.29 cases would have been expected. This a significant excess using a poisson test. If the benign tumors are added to the total malignant tumors, there is also a significant excess of all tumors (obs. 13, exp. 6.9 ).
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