Soft-tissue dystocia due to paradoxical contraction of the levator ani as a cause of prolonged second stage: concept, diagnosis, and potential treatment
医学
肛提肌
阶段(地层学)
收缩(语法)
软组织
解剖
盆底
产科
外科
内科学
生物
古生物学
作者
A. Youssef,E. Brunelli,Marta Fiorentini,G. Pilu,Federico Spelzini