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为了解阿拉善盟左旗（简称阿左旗）蒙、汉族中小学生贫血状况，我们于1993年对阿左旗蒙汉族中小学生1439名进行了贫血调查。选取7～17岁的蒙汉族学生1439名。其中蒙族学生697名，汉族学生742名；对同年龄段的学生随机抽样。统一在上午取左手无名指血，血红蛋白检测采用氰化高铁
To understand the anemia among primary and middle school students in Mongolia and Han nationalities in Alxa League Left Banner (Aozuo Banner), we conducted an anemia investigation on 1,439 Mongolian and Han nationality primary and secondary school students in Aozhan Banner in 1993. Select 1439 Mongolian and Han nationality students aged 7 to 17. Among them, 697 are Mongolian students and 742 are Han Chinese students. Random sampling is conducted for students in the same age group. Uniform in the morning to take the left hand ring finger blood, hemoglobin test using cyanide high-speed rail