What is the Q Collar, the device NFL players are wearing around
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Vernon Davis' mysterious neck device might save him from concussions
Q-Collar: Helps Protect Athletes From Brain Injury
FDA approves new device to help protect athletes from traumatic
Ring Around the Collar
Q-Collar device to help prevent concussion worn at World Cup
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Concussion prevention: Q-collar can reduce brain injury - Sports
Q-Collar helps Texas guard Audrey Warren hampered by concussions
Sorry if this has already been answered, but what are these collar
What Is the Q-Collar, the Band NFL Players Wear Around Their Necks?
Q-Collar: New equipment helps protect the brain of high contact
Misrepresentation of actual science': Professor skeptical about Q
