Reproductive factors and risks of biliary tract cancers and stones: a population-based study in Shanghai, China


Background:Parity has been linked to gallbladder cancer and gallstones, but the effects of other reproductive factors are less clear.Methods:We examined 361 incident biliary tract cancer cases, 647 biliary stone cases, and 586 healthy women in a population-based study in Shanghai.Results:The effects of parity (odds ratios, OR⩾3 vs 1 child=2.0, 95… (More)
DOI: 10.1038/sj.bjc.6605597


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