title: Editorial Comment.
authors.affiliation: Medicine, Epidemiology and Biostatistics, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Department of Quantitative Health Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio.
authors.forename: Michael W
authors.initials: MW
authors.lastname: Kattan
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D009364:Neoplasm Recurrence, Local / Q000473:pathology*; D049451:Nomograms; D001749:Urinary Bladder Neoplasms / Q000473:pathology*