Funding for this research was provided by:
Grants-in-Aid for Scientific Research, Japan Society For The Promotion Of Science (17K15870)
Received: 23 October 2020
Accepted: 23 December 2020
First Online: 6 January 2021
Ethics approval and consent to participate
: This study was approved by the institutional review board or medical ethics committee of each study institution. The need for informed consent was waived, and an opt-out recruitment method was employed.
: Not applicable.
: The authors declare that they have no competing interests.