Kim, Pyeong Hwa
Gwon, Dong Il http://orcid.org/0000-0002-3121-2853
Kim, Jong Woo
Chu, Hee Ho
Kim, Jin Hyoung
Article History
Received: 16 January 2020
Revised: 26 March 2020
Accepted: 23 April 2020
First Online: 15 May 2020
Compliance with ethical standards
:
: The scientific guarantor of this publication is Dong Il Gwon.
: The authors of this manuscript declare no relationships with any companies whose products or services may be related to the subject matter of the article.
: No complex statistical methods were necessary for this paper.
: Written informed consent was waived by the Institutional Review Board.
: Institutional Review Board approval was obtained.
: • retrospective• observational• performed at one institution