Impact on Clinical- and Patient-Reported Outcomes Measures of an Organ Preservation-Based Therapeutic Strategy in Locally Advanced Rectal Cancer: The FOREST Project - Guadalajara, Hector; Cristobal, Ion; Fuentes-Mateos, Raquel; Ruiz-Hispan, Eva; Dominguez-Tristancho, Jose Luis; Leon-Arellano, Miguel; Sanchez-Moreno, Paula; Sabater-Duran, Marta; de La Parra, Juan Antonio Alvaro; Garcia-Olmo, Damian; Carames, Cristina (JOURNAL OF CLINICAL MEDICINE, 2026)