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【单选题】
在病例对照研究中，病例组有暴露史的比例显著高于对照组，则可认为
A.
暴露与该病有因果关系
B.
暴露是该病的原因
C.
该病是由这种暴露引起的
D.
该病与暴露存在联系
E.
该病与暴露无关
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