Kim, Lyoung Hyo
Kim, Jeong-Hyun
Namgoong, Suhg
Cheong, Hyun Sub
Yoon, Seon-Jin
Kim, Eui Hyun
Kim, Se Hoon
Kim, Sun Ho
Chang, Jong Hee
Shin, Hyoung Doo http://orcid.org/0000-0003-1732-7838
Article History
Received: 14 November 2018
Accepted: 20 December 2018
First Online: 13 March 2019
Compliance with ethical standards
:
: All 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.
: Informed consent was obtained from all individual participants included in the study.