中国计划生育学杂志
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早产初产妇产程时限特征分析
南京医科大学附属妇产医院(南京市妇幼保健院)(210000)
Analysis on the characteristics of labor duration of primiparas with premature
Maternity Hospital Affiliated to Nanjing Medical University (Nanjing Maternal and Child Health Care Hospital), Nanjing, Jiangsu Province, 210000