Received: 24 December 2020
Accepted: 31 May 2021
First Online: 13 July 2021
: The project was approved by the Institutional Review Board of Gyeongsang National University Changwon Hospital and Gyeongsang National University Hospital. The study adhered to the principles of the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. Informed consent was waived given that all personal data obtained were anonymized before analysis.
: Not applicable.
: The authors declare that they have no competing interests.