Aged Aged 80 and over Chemoradiotherapy/*mortality/*statistics & numerical data Combined Modality Therapy Cystectomy/*mortality/*statistics & numerical data Disease-Free Survival Female Humans Male Middle Aged Neoplasm Invasiveness Postoperative Complications/mortality/prevention & control Prevalence Radiation Injuries/mortality/prevention & control Risk Factors Survival Rate Treatment Outcome Urinary Bladder Neoplasms/*mortality/*therapy