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DECLARATIONS
Authors’ contributions
Performed RAMIEs as a console surgeon: Takeuchi H
Performed RAMIEs as assistant surgeons and collected clinicopathological data: Kikuchi H, Booka E,
Haneda R, Murakami T, Matsumoto T, Hiramatsu Y
Wrote the manuscript: Kikuchi H

Availability of data and materials
Not applicable.

Financial support and sponsorship
None.

Conflicts of interest
All authors declared that there are no conflicts of interest.

Ethical approval and consent to participate
This study was approved by the ethics committee of Hamamatsu University School of Medicine (IRB Nos.
17-149 and 17-165). The board waived the requirement for written patient consent for the use of
clinicopathological data, and all the patients provided written informed consent or agreed to participate via
an opt-out approach. This study conformed to the guidelines set forth in the Helsinki Declaration of 1975
and its later versions.

Consent for publication
Not applicable.

Copyright
© The Author(s) 2024

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