They examined 13 prospective cohort studies.

他们共进行了13项预期的群组实验。

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All were prospective cohort studies that used mifepristone and misoprostol to induce abortion.

此九项研究均为运用米非司酮和米索前列醇诱导药物流产的前瞻性群组研究。

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Excess risk of fatal coronary heart disease associated with diabetes in men and women: meta-analysis of 37 prospective cohort studies.

糖尿病致死性的冠心病高危与男女性别有关：荟萃37项前瞻性队列研究的分析。

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The strongest data, from prospective cohort studies, is a relative risk of 1.26 for consuming a soda a day and developing diabetes.

FORBES: No Free Speech For Beyonc��! Says New York Times Writer