Go, Se-Il
Park, Sungwoo
Kang, Myoung Hee
Kim, Hoon-Gu
Kim, Hye Ree
Lee, Gyeong-Won
Article History
Received: 2 March 2018
Accepted: 30 October 2018
First Online: 9 November 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: 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.
: This study is a retrospective analysis without any intervention and thus did not require informed consent.