Thanks for calling Popp Electric Co., Ltd, Plesae wait, I will answer your call shortly.

欢迎致电波普电气，请稍候，我将尽快接听你的电话！

Thanks for calling Wenzhou Popp Electric Co., Ltd, Plesae wait, I will answer your call shortly.

欢迎致电波普电气有限公司，请稍候，我将尽快接听你的电话！

Objective To study the characteristics of the labor course and perinatal prognosis of fetal persistent occipital posterior position (POPP).

目的探讨胎儿持续性枕后位的相关因素、产程特点及分娩预后。