by
Katz, David L., 1963-
Format:
Books
Publication Date
2014
Excerpt:
Investigation -- 4.The Study of Risk Factors and Causation -- 5.Common Research Designs and Issues in
by
Jekel, James F.
Format:
Books
Publication Date
2007
Excerpt:
-- Epidemiologic surveillance and outbreak investigation -- The study of causation in epidemiologic investigation
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