Jo, Yong Suk
Park, Sangshin
Kim, Deog Kyeom
Yoo, Chul-Gyu
Lee, Chang-Hoon
Article History
Received: 4 April 2017
Accepted: 15 February 2018
First Online: 27 February 2018
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board (IRB) of Seoul National University Hospital (IRB no. 1602-122-743).
: 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.