PCN40 Year to Year Budget Impact Analysis of Biological Therapies for First-Line Treatment of Metastatic Colorectal Cancer in Spain - Martínez-Amores, B.; Mezquita, L.; Ibáñez de Cáceres, I.; Ayuso, Á; Peña, J.M.; Perona, R.; Grande, E.; Belda-Iniesta, C. (Value in Health, 2012)