Tokiya, Mikiko
Itani, Osamu
Otsuka, Yuichiro
Kaneita, Yoshitaka http://orcid.org/0000-0003-1287-7590
Funding for this research was provided by:
Ministry of Education, Culture, Sports, Science and Technology (JP 17K09117)
Article History
Received: 19 October 2019
Accepted: 5 August 2020
First Online: 11 August 2020
Ethics approval and consent to participate
: The participation of students in the present study was voluntary. Our cohort included 15- to 16-year-old adolescents, and all students eligible to participate in this study had completed junior high school courses. This survey was conducted among students who provided written voluntary informed consent and had parental consent for study participation. The present study was approved (approval no. 932) by the Oita University Ethics Committee.
: Not applicable.
: The authors declare that they have no actual or potential competing financial interests.