Funding for this research was provided by:
National Research Foundation of Korea (2018R1D1A1B07048202)
National IT Industry Promotion Agency (A0105-20-1007)
Received: 9 July 2020
Accepted: 8 December 2020
First Online: 7 January 2021
Compliance with ethical standards
: Seong Ji Choi, Mohammad Azam Khan, Hyuk Soon Choi, Jaegul Choo, Jae Min Lee, Soonwook Kwon, Bora Keum, and Hoon Jai Chun have no conflicts of interest or financial ties to disclose.
: This study was conducted in accordance with the Helsinki Declaration, and the Ethics Committee of Korea University Anam Hospital approved this study (2019AN0253).