Funding for this research was provided by:
Chonnam National University Hospital Biomedical Research Institute (CRI 18039-1)
Received: 1 May 2019
Accepted: 25 March 2020
First Online: 10 April 2020
Ethics approval and consent to participate
: All procedures were conducted with written informed consent, and the experimental protocol was approved by the Committee of Ethics of the Chonnam National University Dental Hospital (IRB#: CNUDH-2016-009).
: Not applicable.
: The authors declare that they have no competing interests.