Two authors independently extracted data and assessed study limitations. Quantitative re-analysis of time series data was undertaken for studies with sufficient data.
两个作者分别摘录资料、评估研究的限制，如果量性的时间序列分析资料量足够则被纳入。
In ancient time it was convenient to find sufficient patients for efficient case study.
在古代可以很方便地找到足够的病人用于高效的病例研究。
In ancient time it was convenient to find sufficient patients for efficient case study.
在古代可以很方便地找到足够的病人用于高效的病例研究。
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