| http://www.w3.org/ns/prov#value | - The Massachusetts Male Aging Study of 1,149 Boston-area men found a relative risk (RR) of 3.3 (95% confidence interval [CI], 1.8???5.9) for prostate cancer among men with a family history of the disease.[19] This effect was independent of environmental factors, such as smoking, alcohol use, and physical activity.
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