本研究为开放式研究，对手术前用药、麻醉方法和术后镇痛方法不加限制。

In this study, preoperative medication, anesthesia and postoperative analgesic methods were not restricted at all.

youdao

本研究为开放式研究，对手术前用药、麻醉方法和术后镇痛方法不加限制。

In this study, preoperative medication, anesthesia and postoperative analgesic methods were not restricted at all.

youdao