方法前瞻性队列研究。

METHOD Design was prospective cohort study.

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设计前瞻性队列研究。

Design Prospective cohort study.

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前瞻性的队列研究。

Study Design. Prospective cohort study.

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研究设计：该研究是一项前瞻性放射学队列研究。

Study Design: This is a prospective radiographic cohort study.

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研究设计：该研究是一项前瞻性放射学队列研究。

Study Design: This is a prospective radiographic cohort study.

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