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Letter
In reply to Shi et al

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Footnotes

  • Contributors MCK and GSDO contributed to the design and implementation of the manuscript, the analysis of the results, writing of the manuscript, editing and approval of the final version of the manuscript. All authors agreed on the accuracy and integrity of the manuscript.

  • Competing interests None declared.

  • Patient consent for publication Not required.

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

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