Nam, Ki-Woong http://orcid.org/0000-0001-7514-6264
Kwon, Hyung-Min
Jeong, Han-Yeong
Park, Jin-Ho
Kwon, Hyuktae
Jeong, Su-Min
Article History
Received: 15 January 2020
Accepted: 25 April 2020
First Online: 6 May 2020
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Seoul National University Hospital and was carried out according to the guideline set out in the Declaration of Helsinki. Informed consent was waived by the IRB due to the retrospective nature of the study.
: Not applicable.
: The authors declare that they have no competing interests.