Funding for this research was provided by:
Ministry of Health, Labour and Welfare (20FC1053)
Received: 12 January 2021
Accepted: 15 March 2021
First Online: 25 March 2021
: A part of the work presented in this review was approved by the ethical committee of Tokyo Medical and Dental University (TMDU).
: All the authors read this manuscript and concurred to submit this manuscript to <i>Inflammation and Regeneration</i>.
: The authors declare they have no competing interests.