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Traumatic brain injury, collision sports participation, and neurodegenerative disorders: narrative power, scientific evidence, and litigation

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  • Contributors GDB wrote the first draft of the manuscript on which JK made comments.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests GDB is a Deputy Editor for the Journal of Epidemiology and Community Health. This editorial was peer-reviewed.

  • Provenance and peer review Commissioned; externally peer reviewed.