Epidural analgesia during labor and its optimal initiation time-points: A real-world study on 400 Chinese nulliparas.
Zha Y, Gong X, Yang C, Deng D, Feng L, Luo A, Wan L, Qiao F, Zeng W, Chen S, Wu Y, Han D, Liu H. Epidural analgesia during labor and its optimal initiation time-points: A real-world study on 400 Chinese nulliparas. Medicine (Baltimore). 2021 Mar 05; 100(9):e24923.