Park, Yung Ki
Yi, Hyeong-Joong
Choi, Kyu-Sun
Lee, Young-Jun
Chun, Hyoung-Joon
Kwon, Sae Min
Kim, Dong-Won
Article History
Received: 31 December 2017
Accepted: 3 May 2018
First Online: 15 May 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 was approved by the institutional review board at the author’s institute (HYUH IRB 2017-10-008-001).
: For this type of study, formal consent is not required.