Chung, Kyu Sung
Ha, Jeong Ku
Ra, Ho Jong
Kim, Jin Goo
Article History
Received: 30 August 2020
Accepted: 7 December 2020
First Online: 17 March 2021
Compliance with ethical standards
:
: No potential conflict of interest relevant to this article was reported.
: The study protocol was reviewed and approved by the Institutional Review Board (IRB) of our institute (IRB no. PAIK-2020-02-012).
: The Institutional Review Board (IRB) waived the requirements of informed consent as all data were anonymous. Therefore, this study was performed without prior informed consent.