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Authors
Ikeda, Takamitsu http://orcid.org/0000-0002-1245-2958
Kato, Atsuko
Bougaki, Masahiko
Araki, Yuko
Ohata, Takuya
Kawashima, Seiichiro
Imai, Yousuke
Ninagawa, Jun
Oba, Koji
Chang, Kyungho
Uchida, Kanji
Yamada, Yoshitsugu
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Article History
Received: 31 March 2020
Accepted: 8 May 2020
First Online: 13 May 2020
Ethics approval and consent to participate
: We have obtained the approval of the institutional review board of the University of Tokyo (IRB (#2203-(6)). At our institution, informed consent was obtained from all surgery patients in advance for the use of data for scientific research and publication.
: Not applicable.
: The authors declare that they have no competing interests.
