Funding for this research was provided by:
National Research Foundation of Korea (NRF-2016R1A6A3A11934851, NRF-2019R1I1A1A01058752)
Asan Institute for Life Sciences, Asan Medical Center (2018-785)
Received: 13 February 2020
Accepted: 10 September 2020
First Online: 2 November 2020
Ethics approval and consent to participate
: The study was approved by the Institutional Review Board of Asan Medical Center (IRB No. 2013–0866). Written informed consent was obtained from all eligible participants.
: Not applicable.
: The authors declare that they have no competing interests.