Shibamoto, Kentaro
Mimura, Hidefumi
Fukuhara, Yuko
Nishino, Ken
Kawamoto, Hirofumi
Kato, Katsuya
Article History
Received: 12 February 2021
Accepted: 31 May 2021
First Online: 5 June 2021
Declarations
:
: The authors declare that they have no conflict of interest.
: All procedures performed in this study involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Our institution’s Ethics Committee approved this retrospective study. The requirement for written informed consent for this study was waived because of its retrospective nature.