Researchers from the Mayo Clinic in Rochester, Minn., found a twofold increase in learning disabilities in children who had more than one exposure to general anesthesia with surgery before age 2.
明尼苏达州罗彻斯特市马约诊所研究发现，给两岁以下儿童做手术麻醉，会给他们带来双倍学习障碍上的危害。
The study included 1, 050 children born between 1976 and 1982 in a single school district in Rochester, Minn., enrolled in a larger health study.
研究的对象为1050名生于1976到1982年间，在明尼苏达州罗切斯特市一个学校的儿童，都被登记做为一个大的健康研究对象。
The Mayo Clinic in Rochester, Minn., defines an adequate amount of sleep as whatever produces daytime alertness and a feeling of well-being.
明尼苏达州 Rochester的Mayo诊所断言适量的睡眠可以使白天精力充沛，感觉良好。
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