Article History
Received: 8 March 2022
Revised: 27 June 2022
Accepted: 30 June 2022
First Online: 18 July 2022
Declarations
:
: The scientific guarantor of this publication is Jin You Kim.
: 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.
: The study was approved by the institutional review board of Pusan National University Hospital (IRB No. 2012-018-098).
: • retrospective• observational• performed at one institution