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Authors
Koie, Takuya https://orcid.org/0000-0002-2980-127X
Hashimoto, Yasuhiro
Imai, Atsushi
Yoneyama, Tohru
Tobisawa, Yuki
Tanaka, Toshikazu
Noro, Daisuke
Oikawa, Masaaki
Suzuki, Tadashi
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Article History
Received: 13 July 2020
Accepted: 29 August 2020
First Online: 1 September 2020
Compliance with ethical standards
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: The authors declare that they have no conflict of interest.
: All procedures performed in 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.
: For this type of study, formal consent is not required. 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. The study information was open for the public consumption at .
