Funding for this research was provided by:
The Research Foundation for Dementia of Osaka (A grant from the Research Foundation for Dementia of Osaka (R1))
Received: 15 March 2021
Accepted: 28 September 2021
First Online: 9 October 2021
: This cross-sectional study was conducted without intervention and in compliance with national legislation and the Declaration of Helsinki. This study was undertaken after obtaining approval from the Ethics Committee of Osaka University Medical Hospital and Kumamoto University Hospital.
: Not applicable.
: The authors declare that they have no competing interests.