No abstract available
MeSH terms
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Adolescent
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Adult
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Aged
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Athletic Injuries / epidemiology
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Athletic Injuries / mortality*
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Baseball
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Bicycling
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Boxing
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Child
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Child, Preschool
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Female
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Football
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Gymnastics
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Humans
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Male
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Middle Aged
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Physical Education and Training
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Play and Playthings
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Public Health*
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Recreation*
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Running
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Skating
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Skiing
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Soccer
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Sports*
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Swimming
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United States
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Wrestling