Methods To group children :the experiment group ,composing of children with Secretory otitis media who were to receive bilateral ventilation tube insertion and adenoidectomy,and the control group ,comprising of healthy children.
英
美
释义
方法实验组由将需接受双面通风管插入和增殖腺切除术的已患有分泌性中耳炎的儿童组成,对照组由健康的儿童组成。
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