以下为句子列表：
英文: The indeterminacy of their results, due to the inevitable effects of the many confounding variables inherent in such studies, illustrates why this approach alone will neither solve the overriding problems of drug safety nor ultimately help a chronically u
中文: 由于此类研究中不可避免的混杂因素导致的他们结果的不确定性，证明这种方法既不能解决最重要的药物安全问题，最终也无助于改善一个长期资金短缺的机构的现状。
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