中国计划生育学杂志
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宫颈扩张球囊对改善足月妊娠宫颈成熟及引产成功率效果
北京市朝阳区妇幼保健院
Effect of cervical dilatation balloon for improving cervical maturation and induced labor success of women with full-term pregnancy
Chaoyang District Maternal and Child Health Care Hospital, Beijing, 100021