丹麦奥尔·胡斯大学的阿贝尔说，已经有许多研究将早产和多动症患病风险联系到一起，但是目前原因尚不明确。
A number of studies have linked preterm birth to an increased risk of ADHD, although the reasons aren't clear, noted Obel, of Aarhus University in Denmark.
Kragh估计至少有300名智力障碍的人们在那个年代中于哥本哈根大学医院及丹麦第二大城市奥尔·胡斯的市医院接受了手术。
Kragh estimates more than 300 mentally handicapped people were operated on during that period at Copenhagen's University hospital and at a municipal hospital in Aarhus, Denmark's second largest city.
此项研究的作者安娜·韦德尔来自丹麦奥尔·胡斯大学，她表示对这次的研究发现感到吃惊。
Study author Anna Vedel, from the University of Aarhus in Denmark, said she was surprised by the magnitude of the results.
丹麦奥尔胡斯大学的研究人员们宣称火星的红色尘埃可能是在没有水的情况下形成的，而现今的假说支持水曾经覆盖过这个星球的说法。
Researchers from Aarhus University in Denmark claim that Mars' red dust could have formed without the water that current hypotheses hold once covered the planet.
丹麦奥尔胡斯大学的研究人员们宣称火星的红色尘埃可能是在没有水的情况下形成的，而现今的假说支持水曾经覆盖过这个星球的说法。
Researchers from Aarhus University in Denmark claim that Mars' red dust could have formed without the water that current hypotheses hold once covered the planet.
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