Jo, Hyun-uk
Yoo, Dae Seon
Park, Jinsung
Park, Hyun Sik
Shin, Hyun Bin
Woo, Seung Hyo http://orcid.org/0000-0002-7636-2679
Article History
Accepted: 22 January 2019
First Online: 7 February 2019
Compliance with ethical standards
:
: None declared.
: 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 not obtained because this study was done retrospectively.