Han, Sojung http://orcid.org/0000-0001-8956-5339
Choi, Hye Jin http://orcid.org/0000-0001-5917-1400
Beom, Seung-Hoon http://orcid.org/0000-0001-7036-3753
Kim, Hye Rim http://orcid.org/0000-0001-9604-7214
Lee, Hyein http://orcid.org/0000-0002-6664-8366
Lee, Jae Seung http://orcid.org/0000-0002-2371-0967
Lee, Hye Won http://orcid.org/0000-0002-3552-3560
Park, Jun Yong http://orcid.org/0000-0001-6324-2224
Kim, Seung Up http://orcid.org/0000-0002-9658-8050
Kim, Do Young http://orcid.org/0000-0002-8327-3439
Ahn, Sang Hoon http://orcid.org/0000-0002-3629-4624
Han, Kwang-Hyub http://orcid.org/0000-0003-3960-6539
Seong, Jinsil http://orcid.org/0000-0003-1794-5951
Won, Jong Yun http://orcid.org/0000-0002-8237-5628
Kim, Beom Kyung http://orcid.org/0000-0002-5363-2496
Article History
Received: 27 December 2020
Accepted: 7 April 2021
First Online: 23 April 2021
Declarations
:
: The authors declare that they have no conflict of interests.
: This study protocol was developed in accordance with the ethical guidelines of the 1975 Declaration of Helsinki and approved by the Institutional Review Board of our institute (No. 4–2020-0145). The requirement for written informed consent was waived owing to the retrospective design.