余在岁
余在岁
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方法采取多阶段分层系统随机抽样方法,对湖北省9个县(市)10000余名年龄在12~65岁之间的常住居民,进行结核病防治知识问卷调查。
Methods A random sampling method in multistage was developed . Around 10000 permanent residents were visited , 12 to 65 years old in 9 counties . Questionnaire was used to understand the knowledge of prevention and treatment of tuberculosis .