Ethics
This study has been approved by the Institutional Review Board on Human Subjects Research and Ethics Committees, Soonchunhyang University, Cheonan, Korea (Approval No. 1040875-202012-BR-095, 1040875-202009-BR-075 and 1040875-202104-BR-030). All subjects and their parent or legal guardian were thoroughly briefed on the purpose of the study, experimental procedures, and potential risks. Participants were children and adolescents between the ages of 9–15. Before the study was undergone, informed consent/assent to participate in the study was obtained from the participant’s parents or legal guardians of all the children and adolescents who took part in the study in the form of a statement in a manuscript. All procedures complied with the 2013 Helsinki Declaration of the World Medical Association.