Kim, Hyoungnae
Kim, Hyunwook
Lee, Misol
Cha, Min-Uk
Nam, Ki Heon
An, Seong Yeong
Jung, Su-Young
Jhee, Jong Hyun
Park, Seohyun
Yun, Hae-Ryong
Kee, Youn Kyung
Oh, Hyung Jung
Park, Jung Tak
Chang, Tae Ik
Yoo, Tae-Hyun
Kang, Shin-Wook
Han, Seung Hyeok http://orcid.org/0000-0001-7923-5635
Article History
Received: 6 August 2017
Accepted: 24 January 2018
First Online: 7 February 2018
Ethics approval and consent to participate
: The study was performed in accordance with the Declaration of Helsinki and approved by the institutional review board (IRB) of the Yonsei University Health System (YUHS) Clinical Trial Center and National Health Insurance Service Medical Center, Ilsan Hospital. Although all patients in this study were informed about the description of investigations, this was conducted as a medical record-based retrospective analysis and the included subjects were anonymized. Therefore, the IRB approved the exemption from obtaining written consent.
: Not applicable
: The authors declare that they have no competing interests
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