Bancong, Hartono http://orcid.org/0000-0003-2738-7703
Song, Jinwoong http://orcid.org/0000-0002-9253-3247
Article History
First Online: 18 June 2020
Compliance with Ethical Standards
: The Institutional Review Board (IRB) of Seoul National University monitored all procedures, including recruitment of participants, consent form for the participants, data collection, and analysis. This study received IRB approval (No.1811/003-015). Following the guidelines for conducting an ethical study, we used the code for all participants.
: The authors declare that they have no conflict of interest.