bladder cancer incidence meta-analyses metformin treatment outcome commercial or financial relationships that could be construed as a potential conflict of interest.

Adjuvants Immunologic/administration & dosage Administration Intravesical Antibiotics Antineoplastic/administration & dosage/adverse effects Antimetabolites Antineoplastic/*administration & dosage/adverse effects BCG Vaccine/administration & dosage Bias Cause of Death Confidence Intervals Deoxycytidine/administration & dosage/adverse effects/*analogs & derivatives Disease Progression Drug Administration Schedule Humans Mitomycin/administration & dosage/adverse effects Neoplasm Recurrence Local/*drug therapy/mortality/prevention & control Randomized Controlled Trials as Topic Saline Solution/administration & dosage Urinary Bladder Neoplasms/*drug therapy/mortality/pathology/prevention & control Gemcitabine

Metabolic syndrome (MS) bladder cancer (BC) grade meta-analysis stage form (available at http://dx.doi.org/10.21037/tcr-20-3350). The authors have no conflicts of interest to declare.