Kwon, Ji Hye
Kim, Jin Hee http://orcid.org/0000-0001-5036-3326
Kim, So Yeon
Byun, Jae Ho
Kim, Hyoung Jung
Hong, Seung-Mo
Lee, Moon-Gyu
Lee, Seung Soo
Article History
First Online: 3 May 2018
Compliance with ethical standards
:
: No funding was received for the performance of this study.
: All authors declare that they have no conflicts of interest.
: This article does not contain any studies with animals performed by any of the authors. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Requirement for informed consent was waived by our institutional review board for this retrospective study.