Methods To observe the scar shapes of 367 infants aged 12 weeks after BCG vaccination and to analyze the purified protein derivative seroconversion results.
方法观察367名接种卡介苗后满12周儿童卡痕形成情况，并对其纯蛋白衍生物试验阳转结果进行分析。
Methods To observe the scar shapes of 367 infants aged 12 weeks after BCG vaccination and to analyze the purified protein derivative seroconversion results.
方法观察367名接种卡介苗后满12周儿童卡痕形成情况，并对其纯蛋白衍生物试验阳转结果进行分析。
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