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Authors
Shinno, Yoshitaka
Terui, Keita
Endo, Mamiko
Saito, Takeshi
Nakata, Mitsuyuki
Komatsu, Shugo
Oita, Satoru
Katsumata, Yoshio
Saeda, Yukiko
Ozeki, Genta
Ohsone, Yoshiteru
Hishiki, Tomoro
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Article History
Accepted: 6 November 2020
First Online: 3 January 2021
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The study design was approved by the Research Ethics Committee of the Graduate School of Medicine, Chiba University (no. 509) and the independent ethics committees of the other four participating institutions. The study was performed in accordance with the principles of the Declaration of Helsinki and the Ethical Guidelines for Medical and Health Research Involving Human Subjects.
: Signed informed consent was not required as this was a retrospective study with de-identified data.
