title: National Cancer Data Base: An Important Research Tool, but Not Population-Based.
authors.affiliation: David A. Palma, London Health Sciences Centre, London, Ontario, Canada.
authors.forename: David A
authors.initials: DA
authors.lastname: Palma
mesh_terms: D016208:Databases, Factual; D006801:Humans; D009369:Neoplasms; D012107:Research Design