在北京市区的公共汽车站采用拦截访问调查法，了解被调查者的铁营养知识和补铁态度及与其相关的影响因素。
To understand the knowledge level of iron, attitude of iron supplementation and the association factors, a street intercept survey method was carried out at the urban bus stations in Beijing.
在北京市区的公共汽车站采用拦截访问调查法，了解被调查者的铁营养知识和补铁态度及与其相关的影响因素。
To understand the knowledge level of iron, attitude of iron supplementation and the association factors, a street intercept survey method was carried out at the urban bus stations in Beijing.
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