该随机对照研究
The randomized controlled study
以上为机器翻译结果，长、整句建议使用 人工翻译 。
但由于纳入研究质量差异较大，有必要开展设计更严谨的随机对照试验来验证该结论。
However, there were some differences among enrolled quality of studies. It is needed to design more strictly randomized controlled trials to validate these conclusions.
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