PO-1098 Standard Radiotherapy Fractionation Toxicity Versus Ultra-Hypofractionation In Breast Cancer. (August 2021) - Escuin, C.; Cerrolaza, M.; Navarro, V.; Lanuza, A.; Campos, A.; Flamarique, S.; García, C.; Gascón, M.; Sanagustin, P.; Pardo, A.; Ibañez, R.