Funding for this research was provided by:
Korea National Institute of Health (HI16C0992)
Received: 29 January 2020
Accepted: 20 May 2020
First Online: 15 June 2020
Ethics approval and consent to participate
: Informed written consent was obtained from all participants and the present study was approved by the Institutional Review Board of Ajou University Hospital (No. AJIRB-MED-EXP-17-167).
: Not applicable.
: All the authors have nothing to declare.