Epidemiology and planning.
D003365:Costs and Cost Analysis; D003695:Delivery of Health Care; D004470:Economics, Medical; D004813:Epidemiology / Q000266:history; D006285:Health Planning; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008962:Models, Theoretical; D009017:Morbidity; D009026:Mortality; D012537:Scandinavian and Nordic Countries; D006113:United Kingdom; D014481:United States