PFOS exposure at environmentally relevant concentrations promote papillary thyroid carcinoma progression through PI3K/AKT/mTOR-mediated epithelial-mesenchymal transition - Yaling Yu; Yi Wang; Xuling Su; Zhenzhen Cai; Qianqian Wang; Chenglong Wang; Yiwei Zhao; Tonghui Zhang; Danjie Hu; Zhiyan Liu (Environmental Research, 2026)