我们于1987年5月至1988年2月对14岁以下儿童血清中钙、铁、锌、镁、铜、锰、磷七种元素进行测定,并对此七种元素间的关系进行了分析研究,现将结果报告如下。一、对象与方法为使调查具有代表性,我们选择开放人群(居委会或自然村为单位),进行城乡对比调查,城市(郑州、平顶山),农村(温县),14岁以下健康儿童为检查对象,经过询问病史,体格检查,排除器质 We measured the contents of seven elements of calcium, iron, zinc, magnesium, copper, manganese and phosphorus in children under 14 years of age from May 1987 to February 1988, and analyzed the relationship between the seven elements ,The results reported below. I. Objects and Methods In order to make the survey representative, we chose to open the crowd (neighborhood or natural village as a unit) to conduct a comparative survey between urban and rural areas, cities (Zhengzhou, Pingdingshan), rural areas (Wen County), healthy children under 14 years of age After asking medical history, physical examination, excluding equipment