Takumi, Koji http://orcid.org/0000-0003-4067-2891
Nagano, Hiroaki
Nakanosono, Ryota
Kumagae, Yuichi
Fukukura, Yoshihiko
Yoshiura, Takashi
Article History
Received: 19 April 2020
Accepted: 11 June 2020
First Online: 23 June 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in the studies 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.
: Institutional ethics review board approval was obtained, and informed consent was waived for this retrospective study.