Kim, Hyoungnae
Paek, Jin Hyuk
Song, Joo Han
Lee, Hajeong
Jhee, Jong Hyun
Park, Seohyun
Yun, Hae-Ryong
Kee, Youn Kyung
Han, Seung Hyeok
Yoo, Tae-Hyun
Kang, Shin-Wook
Kim, Sejoong
Park, Jung Tak
Article History
Received: 26 April 2018
Accepted: 25 September 2018
First Online: 27 October 2018
Ethics approval and consent to participate
: The study protocol was approved by the institutional review boards of Yonsei University Health System and Seoul National University Bundang Hospital. Informed consent was waived by the institutional review boards, owing to the retrospective study design.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.