Text and Data Mining valid from 2019-03-08
Received: 22 February 2018
Accepted: 27 February 2019
First Online: 8 March 2019
Ethics approval and consent to participate
: All procedures performed in this study have been approved by the ethical committee at the Graduate School of Education and Human Development, Nagoya University, Japan (Reference number: 490). Information on participation in the study was written in the questionnaire. A verbal informed consent was obtained from all participants before including them in the study.
: Not applicable.
: The authors declare that they have no competing interests.
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