646 Nephron sparing surgery does not decrease other-causes mortality relative to radical nephrectomy in patients with clinical T1a-T1b renal mass: Results from a large multi-institutional study. - Capitanio, U.; Terrone, C.; Antonelli, A.; Minervini, A.; Volpe, A.; Furlan, M.; Matloob, R.; Regis, F.; Di Trapani, E.; De Angelis, P.; Serni, S.; Colombo, R.; et al. (European Urology Supplements, 2014)