Kim, Hyung Cheol
Oh, Jae Keun
Kim, Du Su
Roh, Jeffrey S.
Kim, Tae Woo
An, Seong Bae
Jeon, Hyeong Seok
Shin, Dong Ah
Yi, Seong
Kim, Keung Nyun
Yoon, Do Heum
Ha, Yoon http://orcid.org/0000-0002-6246-8042
Article History
Received: 31 August 2019
Revised: 26 November 2019
Accepted: 11 December 2019
First Online: 9 January 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures were performed in accordance with the ethical standards of the Institutional Review Board of Severance Hospital (approval number 2019-0739-001).
: The requirement for informed consent was waived because of the retrospective design of this study.