Funding for this research was provided by:
Institute for Information and Communications Technology Promotion (2019-0567)
Received: 25 April 2020
Accepted: 9 September 2020
First Online: 21 September 2020
Ethics approval and consent to participate
: The institutional review board of Seoul National University Hospital approved this study (IRB No: 1905–001-1029 and 1905–108-1035). The authors complied with the Declaration of Helsinki and the Human Research Protection Program.
: All materials had been obtained for medical care of the patients, which were anonymized and retrospectively reviewed. No extra-human materials were obtained for this study. Under the Korean Bioethics and Safety Act, additional consent to publish was waivered<i>.</i>
: The authors declared that they have no competing interests.