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Author response: Identifying concussion: when guidelines collide with real-world implementation—is a formal medical diagnosis necessary in every case once a proper protocol is implemented?
  1. Pierre Frémont
  1. Correspondence to Dr Pierre Frémont, Department of rehabilitation, Faculty of Medicine, Laval University, Québec, QC, Canada G1T 2C9; pierre.fremont{at}

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I would like to thank Dr Lawrence and Hutchison for sharing their concerns about the ideas proposed in my recent editorial.1

The author's statement about the time course of recovery is valid. However, the concepts of ‘favourable evolution’ and ‘complete recovery’ are different. Accordingly, the editorial states that “cases that do not clearly improve within 7–10 days” should seek medical assessment. Also, the quoted study populations that consult “ … to the Sports Concussion Clinic … within 3 weeks”2 or “in paediatric ER department within 48 hours”3 likely present a …

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  • Competing interests None declared.

  • Provenance and peer review Commissioned; internally peer reviewed.

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  • Correspondence
    David Wyndham Lawrence MichaelG Hutchison