title: World Health Organization and International Society of Urological Pathology classification and two-number grading system of bladder tumors: reply.
authors.forename: L
authors.initials: L
authors.lastname: Cheng
authors.forename: D G
authors.initials: DG
authors.lastname: Bostwick
mesh_terms: D002277:Carcinoma / Q000145:classification; D006801:Humans; D009361:Neoplasm Invasiveness; D010212:Papilloma / Q000145:classification; D009626:Terminology as Topic; D001749:Urinary Bladder Neoplasms / Q000145:classification* / Q000473:pathology; D014944:World Health Organization