What is a Concussion?
What is a concussion (closed head injury, traumatic brain injury TMB)? What are the symptoms and signs of a concussion? What to do when you or someone you kn...
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What is a concussion (closed head injury, traumatic brain injury TMB)? What are the symptoms and signs of a concussion? What to do when you or someone you know has a concussion.
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34
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1:00
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Published
Jul 21, 2010
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