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  1. Barry Pless
  1. Correspondence to Dr Barry Pless, Westmount, Quebec, Canada H3Y2V2; barry.pless{at}mcgill.ca

https://doi.org/10.1136/injuryprev-2013-040827

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    Footnotes

    • Competing interests None.

    • Provenance and peer review Commissioned; internally peer reviewed.