Characteristics of study population, before and after propensity matching (see S1 Fig for SMDs; all were <0.1 after the match).
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Characteristics of study population, before and after propensity matching (see S1 Fig for SMDs; all were
研究人群在倾向匹配（propensity matching）前后的特征（标准化均差（Standardized Mean Difference, SMD）详见补充材料图S1；所有
创建时间：
2021-09-27
