Boo, Sun Ha
O, Joo Hyun http://orcid.org/0000-0002-6568-5915
Kwon, Soo Jin
Yoo, Ie Ryung
Kim, Sung Hoon
Park, Gyeong Sin
Choi, Byung Ock
Jung, Seung Eun
Cho, Seok-Goo
Article History
Received: 18 April 2019
Revised: 7 June 2019
Accepted: 18 June 2019
First Online: 29 June 2019
Compliance with Ethical Standards
:
: Sun Ha Boo, Joo Hyun O, Soo Jin Kwon, Ie Ryung Yoo, Sung Hoon Kim, ExternalRef removed, Byung Ock Choi, Seung Eun Jung, Seok-Goo Cho declare that they have no conflict of interest. There is no source of funding.
: 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.
: The Institutional Review Board of our institute approved this retrospective study, and the requirement to obtain informed consent was waived.