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Authors
Okamoto, Teppei
Noro, Daisuke
Hatakeyama, Shingo http://orcid.org/0000-0002-0026-4079
Narita, Shintaro
Mitsuzuka, Koji
Sakurai, Toshihiko
Kawamura, Sadafumi
Hoshi, Senji
Shimoda, Jiro
Tanaka, Toshikazu
Kawaguchi, Toshiaki
Ishidoya, Shigeto
Ito, Akihiro
Tsuchiya, Norihiko
Habuchi, Tomonori
Ohyama, Chikara
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Funding
Funding for this research was provided by:
the Japan Society for the Promotion of Science (18K16718, 19H05556, 20K09517)
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Article History
Received: 8 October 2020
Accepted: 16 April 2021
First Online: 25 May 2021
Declarations
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: This retrospective study was performed according to the ethical standards of the Declaration of Helsinki and was further approved by the ethics review board of the Hirosaki University School of Medicine (authorization number: 2019–094). Pursuant to the provisions of the ethics committee and the ethic guideline in Japan, written consent was not required in exchange for public disclosure of study information in the case of retrospective and/or observational study using a material such as the existing documentation.
: Not applicable.
: All authors have no conflicts of interest to declare.
