Jeon, Seung Hyuck
Song, Changhoon
Chie, Eui Kyu
Kim, Bohyoung
Kim, Young Hoon
Chang, Won
Lee, Yoon Jin
Chung, Joo-Hyun
Chung, Jin Beom
Lee, Keun-Wook
Kang, Sung-Bum
Kim, Jae-Sung
Funding for this research was provided by:
Ministry of Education (NRF-2017R1D1A1B03033892)
Article History
Received: 3 January 2019
Accepted: 28 February 2019
First Online: 12 March 2019
Ethics approval and consent to participate
: This retrospective patient study was approved by Institutional Review Board of the Seoul National University Bundang Hospital, and the requirement for written informed consent was waived. This study complies with the standards of the Declaration of Helsinki and current ethics guidelines.
: 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.