胎儿半肩径超声检查在难产中的应用研究(3)
[4]Overland EA1,Vatten LJ,Eskild A. Risk of shoulder dystocia: Associations with parity and offspring birthweight. A population study of 1 914 544 deliveries[J].Acta Obstet Gynecol Scand,2012,91(4):483-488.[5]Ouzounian JG ......
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