Received: 23 September 2020
Accepted: 26 January 2021
First Online: 6 February 2021
Ethics approval and consent to participate
: Chonnam National University Hospital Institutional Review Board approved the patient record review and all data collected. The reference number for the project was CNUH-2020-019. For this type of study, formal consent was not required, and the Chonnam National University Hospital Institutional Review Board approved this.
: Not applicable.
: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.