中国计划生育学杂志
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分娩球自由体位助产联合分娩镇痛仪对初产妇产痛及分娩结局的影响
安徽省阜阳市人民医院(236000)
Effects of midwifery by free position and birthing ball combined with labor analgesia instrument of primiparous on their labor pain and delivery outcomes
Fuyang People's Hospital, Fuyang, Anhui Province, 236000