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Article History

Received: 19 March 2021

Accepted: 8 November 2021

First Online: 2 December 2021

Declarations

:

: The study was approved by the Institutional Review Board of the Gachon University Gil Medical Center, which provided a waiver of consent (IRB no. GFIRB2019–039). The requirement to obtain written consent was waived because human subjects were not involved in the study. All study methods were carried out based on the Declaration of Helsinki.

: ‘Not applicable’.

: The authors declare that they have no conflicts of interest.