Sung, Ki Hyuk
Kwon, Soon-Sun
Chung, Chin Youb
Lee, Kyoung Min
Kim, Jaeyoung
Lee, Seung Yeol
Park, Moon Seok http://orcid.org/0000-0002-2856-7522
Funding for this research was provided by:
Ministry of Science, ICT and Future Planning (Grant No. PA-C000001-2015-202)
Article History
Received: 29 August 2017
Accepted: 16 April 2018
First Online: 27 April 2018
Ethics approval and consent to participate
: This study was approved by the institutional review board of Seoul National University Bundang Hospital (IRB number: B-1603/340-101), which waived informed consent because of its retrospective design.
: The authors declare that they have no competing interests.
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