Retraction notice to "Ultrasound-guided erector spinae plane block improves analgesia after laparoscopic hepatectomy: a randomised controlled trial" [Br J Anaesth 129 (2022) 445-453].

This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/policies/article-withdrawal). This article has been retracted at the request of the Editor-in-Chief, Professor Hugh C. Hemmings, following an internal review which concluded that the data and the methods presented are flawed and that the validity of the results presented has been affected.