Ultrasound-guided erector spinae plane block versus thoracic epidural block for postoperative analgesia in pediatric Nuss surgery: a randomized noninferiority trial. - Ren, Yi; Nie, Xiaolu; Zhang, Fuzhou; Ma, Yangwei; Hua, Lei; Zheng, Tiehua; Xu, Zenghua; Gao, Jia; Zhang, Jianmin (Journal of Anesthesia, 2024)