The analgesic efficacy of the continuous adductor canal block compared to continuous intravenous fentanyl infusion with a single-shot adductor canal block in total knee arthroplasty: a randomized controlled trial. - 1; Hyoung Yong Moon; Choon Gun Ryu; Hyun Kang; Han Jun Lee; Hwa Yong Shin (Korean Journal of Pain, 2019)