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Authors
Watanabe, Kei https://orcid.org/0000-0002-8743-7074
Ohashi, Masayuki
Hirano, Toru
Katsumi, Keiichi
Shoji, Hirokazu
Mizouchi, Tatsuki
Ishikawa, Yuya
Hasegawa, Kazuhiro
Endo, Naoto
Takahashi, Hideaki E.
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Article History
Received: 24 August 2018
Revised: 9 February 2019
Accepted: 12 February 2019
First Online: 19 February 2019
Compliance with ethical standards
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: Kei Watanabe, Masayuki Ohashi, Toru Hirano, Keiichi Katsumi, Hirokazu Shoji, Tatsuki Mizouchi, Kazuhiro Hasegawa, Naoto Endo, and Hideaki E. Takahashi declare that they have no conflict of interest.
: The study was approved by the ethics committee of the Niigata University Graduate School of Medical and Dental Sciences. 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.
: Informed consent was obtained from all individual participants included in the study.
