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为了观察贫血综合防治效果，我们在城区内抽取了小学、初中、高中3所学校，对综合防治前的1994年和防治3年后的1997年学生血红蛋白检测资料进行了对比分析，现将结果分析如下。1对象与方法1．1对象以日照港务局小学，初中和日照一中1994年和1997年全部在校学生为观察对象。1．2
In order to observe the effect of comprehensive prevention and treatment of anemia, we collected three primary, middle and high schools in the urban area, and compared and analyzed the data of hemoglobin testing of students in 1997 before comprehensive prevention and control in 1997 and three years after prevention and treatment. as follows. 1 Subjects and methods 1.1 The object to Rizhao Port Authority primary, junior high school and sunshine in 1994 and 1997 all the students in school for the observation. 1.2