Efficacy and Safety of Nalbuphine Compared with Other Analgesics for Moderate-to-severe Postoperative Pain: A Systematic Review and Network Meta-analysis. - Chen, Rong-Sheng; Liang, Ren-Jong; Tang, Sung-Ling; Hsu, Li-Feng; Wang, Hong-Jaan; Hsieh, Ping-Hsuan (Journal of medical sciences / National Defense Medical Center, 2026)