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我们于1984年4月至6月,配合儿童节健康检查,对杭州市城区988名及郊区291名7岁以下小儿进行了营养性贫血患病率及病因的调查。现将调查结果报告如下。方法与对象
We conducted a survey on the prevalence and etiology of nutritional anemia in 988 children in Hangzhou and 291 children under the age of 7 in the suburbs from April to June 1984 in conjunction with the Children’s Day Medical Examination. The survey results are reported below. Methods and objects