Funding for this research was provided by:
Ministry of Health, Labour and Welfare (19FA1002, 21FA1012)
Received: 26 May 2022
Accepted: 31 July 2022
First Online: 13 August 2022
: The study was conducted according to the 1964 Declaration of Helsinki and its later amendments. It was approved by the National Cerebral and Cardiovascular Center ethics committee (authorization number, R20110-2).
: The manuscript was approved by all authors for publication.
: The authors have no competing interests to declare.