Lee, Kyungmin https://orcid.org/0000-0003-3102-4550
Lee, Gyu-Hyoung
Funding for this research was provided by:
National Research Foundation of Korea (No. 2020R1F1A1070617 and NRF-2017R1D1A1B03032132)
Article History
Received: 28 April 2020
Accepted: 27 August 2020
First Online: 30 September 2020
Ethics approval and consent to participate
: Ethical approval: All procedures performed in this study involving human participants were in accordance with the ethical standards of the institutional and national research committee (Institutional Review Board of the Chonnam National University Dental Hospital, Gwangju, Korea; CNUDH-EXP-2019-019) and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.Informed consent: For this type of study, formal consent is not required. Data were provided by the institutions as anonymized files and the methodology was accepted by the relevant ethical committee.
: Not applicable.
: Kyungmin Lee and Gyu-Hyoung Lee declare that they have no competing interests.