Kim, Kyung Hwan
Cho, Yang-Sun
Seol, Ho Jun http://orcid.org/0000-0003-4187-054X
Cho, Kyung-Rae
Choi, Jung-Won
Kong, Doo-Sik
Shin, Hyung Jin
Nam, Do-Hyun
Lee, Jung-Il
Article History
Received: 6 August 2019
Revised: 22 October 2019
Accepted: 11 November 2019
First Online: 22 November 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This retrospective study was approved by the institutional review board (Samsung Medical Center; IRB No. 2018-07-009) and conducted in accordance with the ethical guidelines of the Declaration of Helsinki.
: The authors certify that all applicable institutional and governmental regulations concerning the ethical use of clinical data were adhered to for the present study; the informed consent requirement was waived.