1 Introduction to epidemiological studies
1.1 What epidemiology studies
1.2 Disease occurrence in populations
1.3 Types of epidemiological study
1.4 What each design can estimate
1.5 Association and causation
1.6 Problems
1.2 Disease occurrence in populations
1.3 Types of epidemiological study
1.4 What each design can estimate
1.5 Association and causation
1.6 Problems
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