Choi, Jung-Ah
Kim, Young Chul
Min, Seon Jeong
Khil, Eun Kyung
Article History
Received: 28 September 2017
Revised: 4 December 2017
Accepted: 18 December 2017
First Online: 30 January 2018
Compliance with ethical standards
:
: The scientific guarantor of this publication is Young Chul 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 (Young Chul Kim).
: Institutional Review Board approval was obtained.
: Written informed consent was waived by the Institutional Review Board.
: Retrospective, observational, performed at one institution.