Objective To investigate the outcome of labor analgesia at latent phase and its influence on mothers and fetus.

目的探讨潜伏期硬膜外分娩镇痛的效果及对母婴的影响。

youdao

Objective To investigate the outcome of labor analgesia at latent phase and its influence on mothers and fetus.

目的探讨潜伏期硬膜外分娩镇痛的效果及对母婴的影响。

youdao