title: The 49th parallel: how much latitude?
authors.forename: P W
authors.initials: PW
authors.lastname: Armstrong
mesh_terms: D002170:Canada; D003695:Delivery of Health Care / Q000191:economics; D006331:Heart Diseases / Q000191:economics / Q000503:physiopathology* / Q000628:therapy; D006801:Humans; D011788:Quality of Life; D016896:Treatment Outcome; D014481:United States