The Impact of Opioid-Sparing Analgesia on Postoperative Pain and Recovery: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. - Zhang, Zhen; Wang, Jing-Jing; Ping, Zhi-Guang; Jin, Xiao-Gao; Yang, Jian-Jun; Wang, Yan; Chu, Qin-Jun; Zhao, Yingying; Feng, Yi; Yan, Wenjun (Pain & Therapy, 2025)