CONCLUSION: There exist age and gender characteristics regarding adolescent smoking behavior. The inducing factors are various, interacted with each other, and combine into a unified identity.

结论：青少年吸烟行为有其年龄特点和性别特点，吸烟行为的影响因素也是多方面的，各个因素之间相互影响，共同构成一个综合体。

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To study the clinical characteristics of incidence, diagnosis, therapy and complications of adolescent ovarian tumors.

探讨青少年卵巢肿瘤的发病情况，诊断和治疗特点以及并发症。

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Objective To investigate the characteristics and changes of comfortable levels after cochlear implants(CI) in adolescents in order to obtain the basic mapping data for adolescent patients.

目的通过探讨人工耳蜗植入术后青少年患者舒适阈的特点及变化，为此类患者调试人工耳蜗提供基本资料。

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