Assertion: atrial fibrillation's symptom | /r/HasProperty | described by people
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Source sentences:
text: symptoms described by people we spoke to included ‘waking up having to go to the loo a couple of times in very quick succession’ before an episode of AF or a repeated need to urinate during an episode, a grey appearance, feeling shivery, not feeling as strong, and passing out ‘like a sack of bricks’.