Associations of serum per- and polyfluoroalkyl substances (PFAS) mixture with the risk of chronic diseases: evidence from single‑ , multi-pollutant, and machine learning models - Mei Li; Liting Sheng; Zige Ding; Guangsheng Yu; Yichu Chen; Qitian Chen; Wei Shao; Bingxin Liu; Mulong Du; Dongying Gu; Silu Chen; Junyi Xin; et al. (Archives of Toxicology, 2026)