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Contributors All authors contributed to the creation, conduct, and writing of the manuscript.
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 BDS is Editor-in-Chief of Regional Anesthesia & Pain Medicine. MD is Executive Editor of Regional Anesthesia & Pain Medicine.
Provenance and peer review Not commissioned; externally peer reviewed.
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