1.
Li X, Lu J. To study the ED50 value of ropivacaine for unilateral spinal anesthesia in elderly patients with different heights undergoing total knee arthroplasty. mcb [Internet]. 2025Mar.6 [cited 2025Jun.24];22(4):1604. Available from: https://www.sin-chn.com/index.php/mcb/article/view/1604