Kim, Kyung Hwan
Lee, Min Ho
Cho, Kyung-Rae
Choi, Jung-Won
Kong, Doo-Sik
Seol, Ho Jun
Nam, Do-Hyun
Lee, Jung-Il http://orcid.org/0000-0001-8143-5513
Article History
Received: 18 September 2018
Accepted: 1 November 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 was approved by the institutional review boards (No. 2017-10-067); For this type of study, formal consent is not required.