title: Theories of disease causation and their impact on public health in 19th century Canada.
authors.forename: A
authors.initials: A
authors.lastname: Ostry
mesh_terms: D002170:Canada; D004194:Disease / Q000209:etiology*; D004196:Disease Outbreaks / Q000266:history; D049672:History, 19th Century; D006801:Humans; D011634:Public Health / Q000266:history*