Article History
Received: 18 June 2021
Accepted: 27 July 2021
First Online: 18 August 2021
Declarations
:
: The authors declare that they have no conflict of interest.
: All procedures performed in the study involving human participants were in accordance with the ethical standards of the Trust and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The internal organ retractor has been approved for surgeries involving laparoscopy in Japan, and the procedure has been carried out as a general clinical procedure.
: Not applicable.
: Written informed consent was obtained from all patients for publication of the accompanying images.