Blood Loss Surgical *Cystectomy Diet Humans Lymph Nodes/pathology *Minimally Invasive Surgical Procedures Postoperative Complications/etiology Randomized Controlled Trials as Topic Recurrence Treatment Outcome Urinary Bladder Neoplasms/*surgery Open radical cystectomy laparoscopic radical cystectomy meta-analysis minimally invasive randomized controlled trials robot-assisted radical cystectomy