| http://www.w3.org/ns/prov#value | - heterogeneity in the types of tumors studied and the method of meat preparation--which can impact the production of carcinogens.METHODS: We address both issues in this case-control study focused on aggressive prostate cancer (470 cases and 512 controls), where men reported not only their meat intake but also their meat preparation and doneness level on a semi-quantitative food-frequency questionn
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