中国计划生育学杂志
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放置宫内节育器后子宫异常出血相关因素分析
宁波市奉化区妇幼保健计划生育服务中心
Analysis of related factors for uterine abnormal bleeding of women after intrauterine device inserted
Fenghua District Maternal&Child Care and Family Planning Service Center of Fenghua City, Zhejiang