656 A MULTI-INSTITUTIONAL COHORT OF ACTIVE SURVEILLANCE FOR LOW-RISK LOCALIZED PROSTATE CANCER - Eggener, S.; Berglund, R.; Mueller, A.; Ayyathurrai, R.; Soloway, M.; Abouassaly, R.; Jones, S.; Klein, E.; Zippavigna, C.; Goldenberg, L.; Eastham, J.; Scardino, P.; et al. (European Urology Supplements, 2008)