Kim, Keunyoung
Kim, In-Joo
Pak, Kyoungjune
Kim, Seong-Jang
Choi, Su Jung
Park, Heeseung
Kang, Taewoo
Kong, In Joo
Shin, Yong Beom
Kim, Hyojeong
Yoon, Jin A http://orcid.org/0000-0001-5762-0559
Article History
Received: 19 June 2019
Accepted: 10 October 2019
First Online: 16 November 2019
Compliance with ethical standards
:
: The authors declare that they have no conflicts 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 retrospective study was approved by our institutional review board (IRB No. D-1803-012-065).
: Requirement for written informed consent was waived for our retrospective study.