Objective: To study the effect of analgesia for painless labor and its influence on mother and fetus.
目的：研究无痛分娩法用于分娩镇痛的疗效和对母婴的影响。
The control group was given the same treatments as that in the experimental group except painless labor.
对照组除不用无痛分娩法外，其他产科处理措施与实验组相同。
The control group was given the same treatments as that in the experimental group except painless labor.
对照组除不用无痛分娩法外，其他产科处理措施与实验组相同。
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