Objective: to study the formation of pulmonary fibrosis from morphological and functional aspects and to offer therapy for pulmonary fibrosis.

前言：目的：从形态学及肺功能研究肺纤维化的形成过程，为治疗肺纤维化提供依据。

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Objective the purpose of this study was to compare the functional and morphological changes in the cervical spine with protrusion of cervical disc (PCD) under different directions of traction.

目的：比较不同牵引方向对颈椎间盘突出症(PCD)的颈椎形态结构的影响。

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