Lymph node density affects cancer-specific survival in patients with lymph node-positive urothelial bladder cancer following radical cystectomy

May M, Herrmann E, Bolenz C, Tiemann A, Brookman-May S, Fritsche H-M, Burger M, Buchner A, Gratzke C, Wülfing C, Trojan L, Ellinger J, Tilki D, Gilfrich C, Höfner T, Roigas J, Zacharias M, Gunia S, Wieland WF, Hohenfellner M, Michel MS, Haferkamp A, Müller SC, Stief CG, Bastian PJ