Infectious Disease Epidemiology.
Nathanson
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Department of Microbiology, University of Pennsylvania School of Medicine, Philadelphia 19104-6055, USA.
Alexander
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ER
D003141:Communicable Diseases / Q000453:epidemiology / Q000266:history*; D004813:Epidemiology / Q000266:history*; D049673:History, 20th Century; D006801:Humans; D014481:United States / Q000453:epidemiology