2.2. Ethical Assumptions
HAND PRESENTATION
This study was approved by the Dajeon community center institutional review board (No. IRB-2022-06). Participants were selected in accordance with the ethical standards of the Committee on Human Experimentation of the institution in which the experiments were carried out or in accordance with the Declaration of Helsinki. Written informed consent was obtained from the parents or guardians of the children. After the participants were recruited via bulletin-board notices within the community center and presentation to parents and children, initial screening was conducted to determine whether the potential patients met the inclusion criteria. Informed consent was obtained from all the patients before participation.