title: Forty years on.
authors.forename: P M
authors.initials: PM
authors.lastname: James
mesh_terms: D004812:Epidemiologic Methods; D049673:History, 20th Century; D006801:Humans; D014076:Tooth Diseases / Q000453:epidemiology* / Q000517:prevention & control; D006113:United Kingdom / Q000453:epidemiology