Funding for this research was provided by:
Japan Society for the Promotion of Science (JP19K21403, JP18H06317, 15H05046, 24689073)
Nippon Dental University (Research Grant 2017)
Article History
Received: 8 May 2020
Revised: 26 May 2020
Accepted: 12 June 2020
First Online: 14 July 2020
Ethics approval and consent to participate
: The present study was approved by the ethics committee of Nippon Dental University School of Life Dentistry at Tokyo (No. NDU-T2013-10) and was conducted in accordance with the Declaration of Helsinki. Written informed consent was obtained from all individual donors after detailed explanation of the procedure and the intended use of the tissues.
: Not applicable.
: The authors declare that they have no competing interests.