Funding for this research was provided by:
the Promotion of Education Reform (Education GP) of Toho University
Article History
Received: 20 October 2021
Accepted: 17 January 2022
First Online: 25 January 2022
Declarations
:
: The authors declare that they have no conflict of interest.
: The protocol for this study was reviewed and approved by the ethics committee of Toho University Faculty of Medicine (reference numbers: A20003_A17105 & A20005_A17121(A17105)). All of the work was confirmed with the provisions of the 1995 Declaration of Helsinki (revised in Edinburgh in 2000).