Funding for this research was provided by:
Ministry of Trade, industry & Energy (P0008799)
Korea Medical Device Development Fund grant (KMDF_PR_20200901_0040)
Received: 24 May 2021
Accepted: 21 September 2021
First Online: 6 October 2021
: This study was approved by the Institutional Bioethics Review Board of Ewha Womans University, Mokdong Hospital (IRB No. 2019-02-036). Informed consents were waived by the review board due to its retrospective nature. All date was collected by retrospective review of charts and images and anonymized before being used for the analysis.
: Not applicable.
: The authors declare no potential conflicts of interest with respect to the authorship and/or publication of this article.