title: Codes, codes, and more codes.
authors.forename: F Allan
authors.initials: FA
authors.lastname: Cockburn
mesh_terms: D006801:Humans; D038801:International Classification of Diseases / Q000706:statistics & numerical data*; D009017:Morbidity; D009520:New Zealand / Q000453:epidemiology; D012907:Smoking / Q000453:epidemiology*