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1990年,在乌鲁森齐地区结核病流调中随机抽取0～14岁有卡痕儿童采用两种结素效价对照,了解有无差异。分析如下。
In 1990, in Urumqi, tuberculosis epidemic in randomly selected 0 to 14-year-old children with kappa marks using two titers of titer control to understand whether there is any difference. analyse as below.