Original ResearchPublished 7 October 2026Development and internal validation of a Cox-based recurrence risk prediction model after endovenous laser treatment for lower-extremity varicose veinsMingxu Ou · Jiang Xu · Kelong Shi · Xiping Zhao · Xianlu Cui · Danqing WangFrontiers in Surgerydoi 10.3389/fsurg.2026.1935570