英语词典
Methods 104 DPN patients were randomly paired by the stratified sampling method and divided into acupuncture medicament group and control group, 52 cases for each.
方法将DPN患者104例，随机分为针药组和对照组各52例。
互联网摘选
DESIGN: Chester sampling investigation and paired design were applied.
设计: 整群抽样调查,配对设计.
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