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Aaron Boogaard, left, breaks down while speaking about
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Aaron Boogaard, left, breaks down while speaking about his brother Derek Boogaard during a public memorial service at the Xcel Energy Center in St. Paul, Minn., for Derek who was found dead in his Minneapolis apartment Friday. Boogaard's sister Krysten is at right and father Len hugs Aaron. (May 15, 2011)(Credit: AP)

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Derek Boogaard memorial

Derek Boogaard's relatives and fans shed tears Sunday as they remembered the former NHL tough guy as a "teddy bear" who was as generous and kind as he was burly and tough, a somber end to a weekend during which his distraught family agreed to donate his brain to medical researchers.