Funding for this research was provided by:
Japan Society for the Promotion of Science (JP18K10715)
Article History
Received: 19 March 2020
Accepted: 14 February 2021
First Online: 23 February 2021
Compliance with ethical standards
:
: None of the authors have any conflicts of interest to disclose.
: All experimental protocols were approved by the Medical Research Ethics Committee at Sapporo Medical University (Approval No. 30-2-26).
: The procedure, purpose, and risks associated with this study were explained to the subjects, and written informed consent was obtained.