中国计划生育学杂志
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预防性宫颈环扎术治疗宫颈机能不全效果及其影响因素分析
重庆市妇幼保健院(401147)
Efficacy of prophylactic cervical cerclage for treating cervical incompetence and its influencing factors
Chongqing Maternal and Child Health Care Hospital, Chongqing, 401147