Method:Using retrospectively analysis method and doing the comparative analysis between the 102 cases of hypamnion group and 100 cases normal amniotic fluid group.
方法：采用回顾性分析方法，对羊水过少组102例和羊水正常组100例进行对比分析。
Methods Take retrospective analysis method to 100 cases patients of PSVT, the patients were randomly divided into Isoptin group and propafenone in the treatment group.
方法对我院收治的100例PSVT患者采取回顾性分析的方法，将患者随机分为异搏定治疗组及心律平治疗组。
Methods: 100 cases of hospital birth in preterm and full-term comparison, analysis of possible risk factors for preterm delivery.
方法：将我院100例早产与足月分娩对比，分析可能发生早产的危险因素。
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