Influence of pulse interval time on the effectiveness of labour analgesia for primiparous and transient mothers
Ying ZHOU,Liang ZHANG,Yingying SUN,Yong LIU,Qiang WU
The Journal of Practical Medicine . 2025, (7): 985 -990 .  DOI: 10.3969/j.issn.1006-5725.2025.07.008