Roger Bate of the American Enterprise Institute, a think-tank in Washington, DC, cautions that any such estimates should be treated with care.

位于华盛顿特区的智库“美国企业研究所”的罗杰-贝特（Roger Bate）告诫说，这些估计应该小心对待。

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Roger Bate is a resident scholar at the American Enterprise Institute and author of Phake the deadly world of falsified and substandard medicines.

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But Roger Bate of the American Enterprise Institute, in a paper published in July, found that 7% of such drugs in his sample failed.

ECONOMIST: Fake pharmaceuticals