Assertion: atrial fibrillation's risk factor | /r/HasProperty | rf
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Source sentences:
text: Its pathogenesis and clinical importance gained enhanced appreciation in the 1990s when early community-based studies, including the FHS (Framingham Heart Study),2–4 provided critical epidemiological data on associated risk factors (RFs) and clinical outcomes.
text: Atrial fibrillation (AF) risk factors (RFs) induce structural and histopathologic changes to the atrium that are characterized by fibrosis, inflammation, and cellular and molecular changes.