J R Soc Med ]], Vol. 97, No. 3, 111-116 (2004)
doi: 10.1258/jrsm.97.3.111

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Figure 3. Risk factors identified from patient histories. The smaller pie charts depict the proportions of male and female patients with isolated, multiple or no risk factors in their histories. The larger pie charts illustrate the relative proportions of isolated risk factors. A-P=abdominopelvic

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