Funding for this research was provided by:
Ministry of Education, Culture, Sports, Science, and Technology (JP15H04783)
Received: 8 September 2020
Accepted: 11 March 2021
First Online: 5 April 2021
: This study was approved by the Ethics Committee of Kanazawa University and adhered to the ethical guidelines of the Declaration of Helsinki. We obtained informed consent for study participation from each of the children and from a parent or guardian.
: Not applicable.
: The authors declare no competing interests.