Kim, Min Seok
Jang, Won Sik
Chung, Doo Yong
Koh, Dong Hoon
Lee, Jong Soo
Goh, Hyeok Jun
Choi, Young Deuk http://orcid.org/0000-0002-8545-5797
Article History
Received: 2 October 2018
Accepted: 20 December 2018
First Online: 3 January 2019
Ethics approval and consent to participate
: All procedures performed in this study were in accordance with the Declaration of the Helsinki and approved by the institutional review board of Yonsei University Health System (YUHS 4–2018-0555).Informed consent from the participants was waived by the institutional review board as the current study satisfied all of the following requirements for the waiver of informed consent. The research involved no more than minimal risk to the participants (retrospective data analysis of previously collected medical record).
: Not applicable.
: The authors declare that they have no competing interests.
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