Funding for this research was provided by:
Received: 10 September 2020
Accepted: 6 January 2021
First Online: 12 January 2021
Ethics approval and consent to participate
: All human samples are collected with the approval of the Institutional Review Board of Gangnam Severance Hospital (Number: 3-2017-0211) and Kangnam Sacred Heart Hospital (Number: 2018-07-029).
: Not applicable.
: The authors declare that they have no competing interests.