title: The critical balance: the influence of government regulation, past and present.
mesh_terms: D002170:Canada; D005060:Europe; D049669:History, 16th Century; D049672:History, 19th Century; D049673:History, 20th Century; D049690:History, Ancient; D006801:Humans; D007883:Legislation, Medical / Q000266:history*; D009784:Occupational Diseases / Q000517:prevention & control*; D009787:Occupational Medicine / Q000266:history*; D014481:United States