Objective: to study relation between children with recurrent respiratory trace infection and zine, selenium in serum.
目的：了解反复呼吸道感染与血清中微量元素锌、硒含量的关系。
Objective:To study the relation between recurrent aphthous ulcer (RAU) and serum copper.
目的：探讨血清铜与复发性口腔溃疡的关系。
We must know the relation about the recurrent laryngeal nerve and the inferior thyroid artery.
颈下部则熟悉喉返神经与甲状腺下动脉的关系。
We must know the relation about the recurrent laryngeal nerve and the inferior thyroid artery.
颈下部则熟悉喉返神经与甲状腺下动脉的关系。
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