Footnotes

• Presented at This work was presented at the 72nd annual meeting of the Korean Pain Society, in Seoul, Korea, November 20, 2021.

• Contributors YL: Conduct of the study, analysis and interpretation of data, reporting, and writing—original draft preparation. D-HK: Conduct of the study, data curation and acquisition, and interpretation of data. JP: Data curation and analysis and interpretation of data. S-SC: Planning, conception, design, and conduct of the study; analysis and interpretation of data; writing—review and editing of the manuscript; and supervision. J-WS: Planning, conception, design, and conduct of the study; writing—review and editing of the manuscript; and project administration. All authors critically revised the manuscript. All authors approved the final version of the manuscript.

• Funding This research was partially supported by Daewon Pharmaceutical.

• Disclaimer The funder had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.

• Competing interests None declared.

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

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