Lee, Sunyoung
Kim, Seong Hyun
Hwang, Jeong Ah
Lee, Ji Eun
Ha, Sang Yun
Article History
Received: 27 March 2018
Revised: 25 June 2018
Accepted: 29 June 2018
First Online: 19 July 2018
Compliance with ethical standards
:
: The scientific guarantor of this publication is Seong Hyun 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.
: One of the authors has significant statistical expertise.
: Written informed consent was waived by the Institutional Review Board.
: Institutional Review Board approval was obtained.
: • retrospective• prognostic study• performed at one institution