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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Best epidemiological study to know Causality is:
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The correct answer is  Temporal association Implies 'cause precedes effect' or 'effect follows cause'. Is 'most impoant criterion' of casual association. Is ' best established by a coho study' (Especially concurrent coho study) as coho study is forward study.