Funding for this research was provided by:
National Research Foundation of Korea (NFR-2017R1C1B5017278, NRF-2018M3C1B7020722)
Institute for Basic Science from the Ministry of Science and ICT of Korea (IBS-R008-D1)
Received: 23 December 2019
Accepted: 15 May 2020
First Online: 1 June 2020
Ethics approval and consent to participate
: The study was approved by the ethical committee of the Keimyung University Dongsan Hospital (IRB 2015-12-022).
: Not applicable.
: The authors declare that they have no competing interests.