https://www.ktvu.com/news/delaware-police-officer-declared-clinically-dead-after-being-attacked-while-responding-to-fight
A Delaware police officer who was attacked early Sunday while responding to a fight at a housing subdivision in Delmar was declared clinically dead Wednesday.
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https://www.livescience.com/health/death/whats-the-longest-someone-has-been-clinically-dead-but-then-come-back-to-life
When someone's heart stops beating, their brain cells start dying within minutes. But sometimes, they can still come back from the dead.
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