Funding for this research was provided by:
Basic Science Research Program through the National Research Foundation of Korea (2017R1D1A1B03029528)
Received: 4 August 2020
Accepted: 14 December 2020
First Online: 7 January 2021
Ethics approval and consent to participate
: This study obtained an ethical approval from the Institutional Review Board of Hanyang University (No. HYI-17-007-1). Informed consent was waived because we used encrypted claims data.
: Not applicable.
: The authors declare that they have no competing interests.