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Updated: Apr 18, 2026

An Investigation of the Effects of Sports-related Concussion in Youth Using Functional Magnetic Resonance Imaging and the Head Impact Telemetry System
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A critical examination of arguments against bicycle helmet use and legislation

Brent E Hagel1, I Barry Pless

  • 1Department of Paediatrics, Faculty of Medicine, University of Calgary, Alberta Children's Hospital, 1820 Richmond Road S.W., Calgary, Alta., Canada T2T 5C7. brent.hagel@calgaryhealthregion.ca

Accident; Analysis and Prevention
|October 26, 2005
PubMed

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