Yi, Hyun Kyung
Park, Yong-Jin
Bae, Ji Hoon
Lee, Jong Kyun
Lee, Kwang Hyuk
Choi, Seong Ho
Lee, Kyung-Han
Kim, Byung-Tae
Choi, Joon Young http://orcid.org/0000-0003-1060-0096
Article History
Received: 12 July 2018
Revised: 5 August 2018
Accepted: 13 August 2018
First Online: 30 August 2018
Compliance with Ethical Standards
:
: Hyun Kyung Yi, Yong-Jin Park, Ji Hoon Bae, Jong Kyun Lee, Kwang Hyuk Lee, Seong Ho Choi, Kyung-Han Lee, Byung-Tae Kim, and Joon Young Choi declare that they have no conflicts of interest.
: All procedures performed in studies that involved human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.For this type of study, formal consent was not required.
: The institutional review board of our institute approved this retrospective study, and the requirement to obtain informed consent was waived.