Funding for this research was provided by:
Grants-in-aid from the Ministry of Education, Culture, Sports, Science, and Technology of Japan (15K14378)
Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province (21113505)
Received: 5 October 2019
Accepted: 21 November 2019
First Online: 29 November 2019
Ethics approval and consent to participate
: All animal experiments were approved by and performed under the guidelines of the Institutional Animal Care and Research Advisory Committee of Tokyo Institute of Technology.
: Not applicable.
: The authors declare that they have no competing interests.