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Correspondence
Limitations of travel data for rate computations

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Footnotes

  • Contributors CEG contributed to the conception and design, analysis and interpretation of data, drafting of the article and final approval of the version to be published.SH contributed to the conception and design, interpretation of the data, critical revision of the letter and final approval of the version to be published.

  • Competing interests None.

  • Provenance and peer review Not commissioned; internally peer reviewed.

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