Funding for this research was provided by:
Yonsei University College of Dentistry (6-2015-0112)
Received: 1 January 2019
Accepted: 15 February 2019
First Online: 4 March 2019
Ethics approval and consent to participate
: This study was approved by and performed in accordance with the guidelines of the institutional animal research ethics committee (IACUC No. 2017-0083).
: Not applicable
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.