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Contributors MAR, AB, OCN, YZ, and XS-B all participated in the planning, writing, and final approval of this letter to the editor.
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 None declared.
Patient consent for publication Not required.
Provenance and peer review Not commissioned; externally peer reviewed.
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