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Figure 1 Change in mortality with age for cancer of the oesophagus, stomach and pancreas in men and for cancer of the stomach and pancreas in women shown on a double logarithmic scale, that is, the logarithm of the death rate per million persons plotted against the logarithm of the mid-point of the age group. The straight line through the points has been drawn arbitrarily to give the best fit, subject to the gradient being 6 to 1
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