External Validation of A Decision Tree Model for Predicting Cancer-Specific Mortality After Radical Cystectomy: A Multi-Center Study in South-East Spain. - Sarrio-Sanz P; Segura-Heras JV; Artés-Artés M; Belda-Ferre M; Vidal-Crespo N; Martinez-Meneu P; Martínez-Cayuelas L; Pérez-Seoane Ballester H; Gil-Guillen VF; Gómez-Perez L; Ortiz-Gorraiz MA (Archivos espanoles de urologia, 2026)