然后，当我在斯德哥尔摩休假时，有机会参与了瑞典的双胞胎人员的登记工作，它是一个大型的队列研究项目，其中的一些研究人员正在着眼于认知的问题。

Then, when I was on a sabbatical in Stockholm, I had the opportunity to get involved with the Swedish Twin Registry, a large cohort study in which some researchers were looking at cognition.

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在国际组织雇员和荷兰商业飞行员中的两项回顾性队列研究，以调查与航空旅行有关的静脉血栓栓塞的实际风险；以及。

Two retrospective cohort studies among employees of international organizations and Dutch commercial pilots to investigate the actual risk of VTE related to air travel; and.

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没有任何可用的队列研究，以测试长时间暴露在电磁场中的后果，他们不得不依赖实验室研究，目前未找到任何明确或可复制的生物效应。

Without any available cohort studies to test exposure over a long period of time, though, they have had to rely on lab studies, which failed to find any clear or reproducible biological effects.

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