Funding for this research was provided by:
Japan Society for the Promotion of Science (19K14431)
Text and Data Mining valid from 2019-11-13
Received: 11 March 2019
Accepted: 10 September 2019
First Online: 13 November 2019
Ethics approval and consent to participate
: The study protocol was approved by the Ethics Committee at the Graduate School of Education and Human Development, Nagoya University (ID: 14–568).
: Not applicable.
: The authors declare that they have no competing interests.