心脏病发作
Methods 60 cases with acute heart stroke, all affirmatively diagnosed by CT or MR, were randomly divided into groups according to their registration numbers: 30 with odd number as observational group and the other 30 with even number as control group.
方法任选60例中风急性期患者(全部经CT或MR确诊),将住院号为双数者列为观察组,住院号为单数者列为对照组,每组30例。
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