Comparative evaluation of TNM staging systems (eighth vs. ninth edition) for the non-surgical treatment of localized and locally advanced anal squamous cell carcinoma: Prognostic significance of T classification and lymph node status - Aihong Zheng; Hong’en Xu; Yiming Tao; Bingchen Chen; Jieni Ding; Tao Song; Yanwei Lu (PLoS ONE, 2025)