Kim, Ji Young
Park, Hwan-Cheol
Kim, Soo Jeong
Chang, Hyung Seok
Choi, Hyung Jin
Kim, Young Hwan http://orcid.org/0000-0002-6513-3846
Article History
Received: 6 December 2018
Revised: 4 January 2019
Accepted: 8 January 2019
First Online: 16 January 2019
Compliance with Ethical Standards
:
: Ji Young Kim, Hwan-Cheol Park, Soo Jeong Kim, Hyung Seok Chang, Hyung Jin Choi, and Young Hwan Kim 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 not obtained due to retrospective review study.