Biomimetic sequential immuno-osteogenic regulation via a dual-drug delivery system with PDA coating on sulfonated PEEK promotes bone defect repair - Zixuan Wu; Kai Ma; Xiaoyu Guo; Zidong Wu; Zheyue Zhu; Yuning Qu; Weidong Zhu; Chengxin Li; Rui Ma; Pei Yang (Chemical Engineering Journal, 2026)