| http://www.w3.org/ns/prov#value | - But headaches, nausea, and other problems may return from plunging back into sports too soon.Always talk with your health care provider to find out more information.(Our Organization is not responsible for the content of Internet sites.)American Academy of Family Physicians - Concussion in SportsAmerican Academy of Pediatrics - Boxing Participation by Children and AdolescentsCDC - Concussion and M
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