(Q51997458)
Statements
Concussion in professional football: repeat injuries--part 4. (English)
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Elliot J Pellman
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David C Viano
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Ira R Casson
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Andrew M Tucker
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Joseph F Waeckerle
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John W Powell
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Henry Feuer
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1 October 2004
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55
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4
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860-73; discussion 873-6
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