Bae, Eunjin
Lee, Hajeong
Kim, Dong Ki
Oh, Kook-Hwan
Kim, Yon Su
Ahn, Curie
Han, Jin Suk
Min, Sang-Il
Min, Seung-Kee
Kim, Hyo-Cheol
Joo, Kwon Wook
Article History
Received: 27 August 2018
Accepted: 19 October 2018
First Online: 6 November 2018
Ethics approval and consent to participate
: This study was reviewed and approved by the Institutional Review Board of Seoul National University Hospital. The requirement for patient informed consent was waived because of the retrospective design of the study. All clinical investigations were conducted based on the guidelines of the 2008 Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.
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