Received: 30 April 2020
Accepted: 31 August 2020
First Online: 5 September 2020
Ethics approval and consent to participate
: We respected all patients’ rights to privacy and protected their identity. The study protocol was approved by the Institutional Review Board of Gyeongsang National University Hospital (IRB No. 2018–11–013-001). All individual information was deidentified.
: Not applicable.
: The authors declare that they have no competing interests.