Received: 25 May 2020
Accepted: 13 January 2021
First Online: 25 January 2021
Ethics approval and consent to participate
: This study was approved by the institutional review board of Ewha Womans University Medical Center, Seoul, Korea (EUMC 2016–01–019-001). Written informed consent was obtained from participants before inclusion.
: Not applicable.
: The authors declare that they have no competing interests.