historical controls的意思|示意

Study Design. Leel III retrospective series with historical controls.

研究设计: 有历史对照的III级回顾性病历资料.

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Complicationrates were similar to those for historical controls treated with fixed - trajectory locking plates.

并发症发生率类似于使用固定轨道锁定钢板的病例对照.

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Design: Prospective series with historical controls.

设计: 前瞻性历史性病例对照研究.

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