Nishi, Toshihiko http://orcid.org/0000-0002-0638-3546
Mutsuga, Masato
Akita, Toshiaki
Narita, Yuji
Fujimoto, Kazuro
Tokuda, Yoshiyuki
Nishida, Kazuki
Matsui, Shigeyuki
Nishiwaki, Kimitoshi
Usui, Akihiko
Article History
Received: 26 May 2020
Accepted: 11 January 2021
First Online: 25 January 2021
Compliance with ethical standards
:
: The authors have declared that no conflict of interest exists.