探讨唐山地区女性乳腺癌的环境危险因素。
To explore the environmental risk factors of female breast cancer in Tangshan area.
唇腭裂；出生缺陷；病例对照研究；环境危险因素。
Birth Defects; Orofacial clefts; Casecontrol Study; Environmental risk factors.
目的分析胃癌的环境危险因素并进行归因危险度评价。
Objective To estimate the population attributable risk for environmental risk factors in the development of gastric cancer.
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