方法采用随机整群抽取湖北省浠水县6所小学6 ~ 9岁学龄儿童789名进行健康状况调查和体格检查。
Methods a randomly cluster sampling method was used to choose 789 school-aged children from 6 to 9 years old came from 6 primary schools in Xishui County.
中国大陆湖北省黄冈市浠水县的邮政编码是438200。
The postcode of Xishui County, Huanggang City, Hubei Province, China is 438200.
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