方法本研究为随机、配对对照的临床研究。
Methods a randomized and paired clinical study was performed.
配对对照组(CG)患者不进行手术治疗而进行标准治疗。
A matched control group (CG) of patients whom refused surgical treatment was placed to receive standard care.
需要设计良好的、前瞻性及适当的配对对照的实验性研究。
Well-designed, prospective experimental studies with appropriately matched controls are needed.
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