中国计划生育学杂志
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高龄孕产妇孕前及孕期检查现状及影响因素分析
江苏省南京市妇幼保健院(210001)
Investigation of the status of pre-pregnancy and pregnancy examinations of elderly pregnant women and its influencing factors analysis
Nanjing Maternal and Child Health Care Hospital, Nanjing, Jiangsu Province, 210001