EP-1232 Hypofractionated RT in very elderly patients (≥ 75 years) diagnosed with GBM. (April 2019) - Cavallin, C.; Mantovani, C.; Iorio, G.C.; Chiovatero, I.; Martini, S.; De Luca, V.; Palladino, C.; Levis, M.; Franchino, F.; Rudà, R.; Ricardi, U.