Article History
Received: 20 May 2021
Revised: 3 December 2021
Accepted: 3 December 2021
First Online: 8 February 2022
Declarations
:
: No potential conflict of interest was reported by the authors.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: The study was approved by the institutional review board (IRB) of the Kyungpook National University (KNU 2018-0175), and the IRB exempted consent from the patients, given that it was a retrospective study.