Funding for this research was provided by:
National Research Foundation, Republic of Korea (2018R1D1A1B07048563, 2016M3A9E8941334)
Received: 18 February 2020
Accepted: 8 July 2020
First Online: 17 July 2020
Ethics approval and consent to participate
: The protocols of this study were approved by the institutional review board of Asan Medical Center (IRB No. 2014-0568, Seoul, Korea). Written informed consent was obtained from all patients and control subjects prior to their inclusion in the study.
: Not applicable.
: The authors declare that they have no competing interests.