Kim, Chi Hoon
Bae, Jee Soo
Kim, Ik-Hwan
Song, Je Seon
Choi, Hyung-Jun
Kang, Chung-Min http://orcid.org/0000-0001-7813-3741
Funding for this research was provided by:
Yonsei University College of Dentistry (2020-32-0013)
Article History
Received: 21 May 2020
Accepted: 29 July 2020
First Online: 4 August 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the Institutional Review Board (approval no. IRB 2-2019-0043) at Yonsei University Dental Hospital and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: For this type of study, formal consent is not required.