Document is current
Any future updates will be listed below
-
Authors
- License Information
-
More Information
Article History
Received: 18 December 2019
Accepted: 21 May 2020
First Online: 11 June 2020
Ethics approval and consent to participate
: The study protocol was approved by the Ethics Committee of Hokkaido University of Education (2019034001). Participants gave their written consent by responding to the questionnaire.
: Not applicable.
: The authors declare that they have no competing interests.
