Funding for this research was provided by:
Japan Society for the Promotion of Science (JP16K08615)
Received: 17 November 2019
Accepted: 27 January 2020
First Online: 4 February 2020
Ethics approval and consent to participate
: Animal experiments were approved by the Institutional Animal Care Committee of the University of Yamanashi (Kofu, Japan).
: Not applicable.
: The authors declare that they have no competing interests.