“每个人都感到很惊讶，”丹麦奥尔·胡斯火星模拟实验室的乔纳森·梅里逊说。
"That was a surprise to everybody," said Jonathan Merrison of the Aarhus Mars Simulation Laboratory in Denmark.
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.
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