Choi, Se Young
Chi, Byung Hoon
Lim, Bumjin
Kyung, Yoon Soo
You, Dalsan
Jeong, In Gab
Song, Cheryn
Hong, Jun Hyuk
Ahn, Hanjong
Kim, Choung-Soo http://orcid.org/0000-0002-7464-3207
Funding for this research was provided by:
National Research Foundation of Korea (NRF-2019R1C1C1005170)
Korea Health Industry Development Institute (H16C2193)
Article History
Received: 8 July 2019
Accepted: 15 November 2019
First Online: 8 January 2020
Compliance with ethical standards
:
: The authors declare no conflicts of interest.
: The study protocol was approved by the Institutional Review Board of the Asan Medical Center (2018-1061). All procedures performed in studies involving human participants were in accordance with the ethical standards of the Institutional Review Board of the Asan Medical Center and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: The Institutional Review Board of the Asan Medical Center waived the requirement for informed consent because of the retrospective design of this study.