The 90% effective concentration of alfentanil combined with 0.075% ropivacaine for epidural labor analgesia: a single-center, prospective, double-blind sequential allocation biased-coin design
Titel:
The 90% effective concentration of alfentanil combined with 0.075% ropivacaine for epidural labor analgesia: a single-center, prospective, double-blind sequential allocation biased-coin design
Auteur:
Jia, Chang Zou, Bin Sun, Ying-Jie Han, Bo Diao, Yu-Gang Li, Ya-Ting Cao, Hui-Juan