872 External validation of disease-free survival at 2 or 3 years as a surrogate and new primary endpoint for patients undergoing radical cystectomy for muscle invasive urothelial carcinoma of the bladder

Fritsche, H.M. ; May, M. ; Burger, M. ; Nuhn, P. ; Otto, W. ; Buchner, A. ; Bolenz, C. ; Herrmann, E. ; Ellinger, J. ; Höfner, T. ; Tilki, D. ; Roigas, J. ; Zacharias, M. ; Trojan, L. ; Haferkamp, A. ; Gilfrich, C. ; Hertle, L. ; Hohenfellner, M. ; Müller, S.C. ; Stief, C.G. ; Wieland, W.F. ; Bastian, P.J.

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