No abstract available
MeSH terms
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Aggression
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Athletic Injuries / epidemiology
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Athletic Injuries / prevention & control*
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Canada / epidemiology
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Competitive Behavior
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Head Injuries, Closed / diagnosis
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Head Injuries, Closed / epidemiology
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Head Injuries, Closed / prevention & control*
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Head Protective Devices
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Hockey / injuries*
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Hockey / standards*
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Humans
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Social Responsibility
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Spinal Cord Injuries / diagnosis
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Spinal Cord Injuries / epidemiology
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Spinal Cord Injuries / prevention & control*
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Sports Equipment
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Survival Rate
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United States / epidemiology