Study Design. A prospective study.
研究设计：前瞻性研究。
Study DESIGN: a prospective study was performed.
研究设计：前瞻性研究。
DESIGN: a randomized controlled prospective study was conducted.
设计：随机对照的前瞻性研究。
DESIGN: Randomly grouping, experimental control and prospective study.
设计：随机分组、实验对照、前瞻性研究。
Methods: Random, double blind and double central prospective study was adopted.
方法：采用随机、双盲、双中心前瞻性研究。
Our study is the only randomized prospective study of 2 different surgical techniques.
我们的研究是唯一一个对2种术式进行随机前瞻性研究的。
Study Design. Prospective study.
研究设计：前瞻性研究。
DESIGN: Prospective study with complete randomization.
设计：完全随机分组的前瞻性研究。
DESIGN: Prospective study with complete randomization.
设计：完全随机分组的前瞻性研究。
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