Original Research

Determining the Minimum Effective Concentration of Ropivacaine in Epidural Anesthesia for Tolerable Pain in Transforaminal Percutaneous Endoscopic Lumbar Discectomy to Avoid Nerve Injury: A Double-Blind Study Using a Biased-Coin Design

Hu B, Li L, Wang H, Ma T, Fu Z, Kang X, Feng Z

Drug Design, Development and Therapy 2022, 16:315-323

Published Date: 9 February 2022