U.S. Soccer's Ali Krieger wears a concussion headband. But do they work? – The Denver Post
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It doesn't matter how the guardian helmets look it matters if they work - Behind the Steel Curtain
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This Helmet Could Save Football
Storelli ExoShield Soccer Head Guard - approved By Virginia Tech
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New Technology Aims To Measure Concussion Risk In Athletes | WBHM 90.3
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Everything You Need to Know to Buy Soccer Concussion merch | Storelli
Concussion Report Highlights Field Maintenance - The New York Times
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$200 Q-Collar is designed to prevent athlete brain injuries
NFL Concussion Prevention: Could New Helmet Save Football? | New helmet, Football helmet design, Helmet
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Jaso embraces new mask for peace of mind | MLB.com
