Effect of different concentrations of ropivacaine for PENG block on multimodal analgesia after femoral head replacement in the elderly
WU Shao-ping, HUANG Xiao-yu, WU Li-ping, ZHANG Yong-fa
Journal of Hebei Medical University . 2022, (12): 1407 -1411,1422 .  DOI: 10.3969/j.issn.1007-3205.2022.12.008