Funding for this research was provided by:
Meiji Yasuda Mental Health Foundation (2020-1-007)
Intramural Research Grant for Neurological and Psychiatric Disorders of NCNP (1–4)
Received: 6 June 2021
Accepted: 28 August 2021
First Online: 7 September 2021
: The study protocol followed the guidelines of the Declaration of Helsinki. The Institutional Review Board at the National Center of Neurology and Psychiatry approved this study (#A2014-114). In all cases, the parent or parents agreed to their child’s participation in this study and provided informed consent before the study commenced.
: Not applicable.
: The authors declare that they have no competing interests.