Objective: To observe the effect of bone lengthening on the serum trace elements.
目的：观察骨延长术对血清微量元素的影响。
Objective To study the change of serum trace elements in patients with liver cirrhosis.
目的探讨肝硬变患者血清中微量元素含量的变化。
Conclusion: There is a correlation between contents of serum trace elements and diet in preschool children in Yanji.
结论：延吉市学龄前儿童血清微量元素水平与膳食结构有一定的相关性。
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