方法：采用病例对照的研究方法，选择山西省肿瘤医院2004 年7 月到2004 年12 月间收治的的女性乳腺癌原发病例94 例作为病例组，按照频数匹配的方法选择一般人群128 例作为对照。
There was 94 primary female breast cancer patients who were cured in tumor hospital of Shanxi from 2004-07 to 2004-12 in case, and 128 healthy people came from countryside, county and town in control.
方法：采用病例对照的研究方法，选择山西省肿瘤医院2004 年7 月到2004 年12 月间收治的的女性乳腺癌原发病例94 例作为病例组，按照频数匹配的方法选择一般人群128 例作为对照。
There was 94 primary female breast cancer patients who were cured in tumor hospital of Shanxi from 2004-07 to 2004-12 in case, and 128 healthy people came from countryside, county and town in control.
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