GOTHENBURG (Reuters) - Olympic boxers risk fighting while still suffering the effects of concussion as they strive to win medals at the London Games, according to research carried out in Sweden by a doctor and former boxer. Sanna Neselius, of Gothenburg's Sahlgrenska hospital, told Reuters how tests had shown that, despite showing no symptoms, many amateur boxers were returning to the ring before full recovery. A former amateur and professional in the female version of the sport, Neselius said spinal fluid was extracted from each of the boxers one to six days after their last fight. ...

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