Funding for this research was provided by:
Japan Society for the Promotion of Science (17K11044)
Received: 20 March 2019
Accepted: 12 December 2019
First Online: 21 December 2019
Ethics approval and consent to participate
: Experiments were conducted in accordance with the National Institutes of Health (NIH) guidelines for the care and use of laboratory animals. The experimental protocol was reviewed and approved by the University of Yamanashi Animal Care Committee.
: Not applicable.
: The authors declare that they have no competing interests.