Basic elements in a conceptual framework for new and resurgent disease. Introduction--conceptual framework section.
Levins
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Department of Population and International Health, Harvard School of Public Health, Boston, Massachusetts 02115.
D003140:Communicable Disease Control; D003141:Communicable Diseases / Q000453:epidemiology*; D004196:Disease Outbreaks; D006801:Humans; D008962:Models, Theoretical