中国计划生育学杂志
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超前镇痛用于无痛人工流产术后疼痛管理的临床效果观察
首都医科大学附属北京妇产医院
Observation of the effect of preemptive analgesia on pain management of patients after painless induced abortion
Department of Birth Control,Beijing Obstetrics and Gynecology Hospital,Capital Medical University,Beijing,100006