FLASH in the Clinic Track (Oral Presentations) A RANDOMIZED CLINICAL PHASE-III-TRIAL COMPARING SINGLE-HIGH DOSE FLASH-RADIOTHERAPY VERSUS CONVENTIONALLY FRACTIONATED RADIOTHERAPY IN CAT-PATIENTS WITH SQUAMOUS CELL CARCINOMA: EARLY STOPPING DUE TO LATE TOXICITY. (February 2022) - Bley, C. Rohrer; Wolf, F.; Goncalves, P. Jorge; Petridis, I.; Petit, B.; Bourhis, J.; Meier, V.; Vozenin, M.-C.