Stanley Royd: errors that led to tragedy.
D003428:Cross Infection / Q000517:prevention & control; D004196:Disease Outbreaks / Q000453:epidemiology*; D005521:Food Service, Hospital / Q000331:legislation & jurisprudence*; D005517:Foodborne Diseases / Q000453:epidemiology*; D006801:Humans; D006113:United Kingdom