Pharmacodynamic characteristics and influencing factors of tapentadol for chronic pain relief under dose titration - Xin, Liang; Zhu, Haoxiang; Niu, Suping; Han, Xie; Pang, Hongxian; Li, Jiangfan; Hu, Ye; Wang, Xuhong; Li, Lujin; Fang, Yi (Frontiers in Pain Research, 2025)