Hara, Shintaro
Yamamoto, Ryuichiro
Maruyama, Miki
Hojo, Reiko
Nomura, Shinobu
Funding for this research was provided by:
Japan Society for the Promotion of Science (16H03247)
Research Project of Joetsu University of Education (General Research)
Article History
Received: 2 December 2017
Accepted: 24 January 2018
First Online: 29 January 2018
Compliance with ethical standards
:
: On behalf of all authors, the corresponding author states that there is no conflict of interest.
: All procedures performed 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. This study was permitted by the Ethics Committee of Joetsu University of Education (Permission number: 56).
: Informed consent was obtained from all individual participants included in the study.