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Authors
Matsunaga, Tetsuro
Nishikawa, Kazutaka
Adachi, Tetsuya
Yasuda, Koichiro
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Funding
Funding for this research was provided by:
Japan Society for the Promotion of Science (JP15K01684)
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Article History
Received: 3 November 2019
Revised: 25 March 2020
Accepted: 31 March 2020
First Online: 8 May 2020
Compliance with ethical standards
:
: 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 Ethical Committee of the Naruto University of Education 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.
