Kim, Ji Rak
Jo, Jung Hwan
Chung, Jin Woo
Park, Ji Woon
Funding for this research was provided by:
National Research Foundation of Korea (2017015377)
Article History
Received: 11 April 2018
Accepted: 12 November 2018
First Online: 22 November 2018
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board (IRB) of Seoul National University Dental Hospital (CRI #15018). The IRB authorized the exemption of informed consent from the subjects.
: 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.