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Article History

Received: 2 June 2021

Accepted: 12 July 2021

First Online: 15 July 2021

Declarations

:

: Not applicable. Formal consent is not required.

: All procedures involving human participants were performed in accordance with the ethical standards of the institutional and/or national research committee, and in accordance with the 1964 Helsinki Declaration and its later amendments (or comparable ethical standards).

: Tetsuya Tanimoto reports personal fees from Medical Network Systems Inc., and Bionics co., ltd, outside the submitted work. All the other authors declare no conflicts of interest.