Comparison of the effect of an equal dose of ropivacaine and levobupivacaine on lumbar plexus block in aged patients undergoing PFNA
ZHANG Long-sheng, YANG Duo, LI Chun-ran, CHEN Meng, LIN Geng-bin, DUAN Shi-qiang
Journal of Hebei Medical University . 2021, (1): 77 -80,84 .  DOI: 10.3969/j.issn.1007-3205.2021.01.016