Received: 9 September 2020
Accepted: 1 February 2021
First Online: 15 February 2021
Ethics approval and consent to participate
: This study was approved by the institutional review boards of Ajou and Dong-A university hospitals (AJIRB-MED-MDB-19-231 and DAUHIRB-19-136).
: Not applicable, as analysis was conducted retrospectively on a database.
: The authors declare that they have no competing interests.