Kim, Dong-Eun http://orcid.org/0000-0003-3706-2603
Kim, Jong-Min http://orcid.org/0000-0003-2001-1850
Lee, Bum-Sik http://orcid.org/0000-0002-7269-0915
Kim, Nam-Ki
Lee, Sang-Hoon http://orcid.org/0000-0002-7089-536X
Bin, Seong-Il http://orcid.org/0000-0003-1787-1139
Article History
Received: 23 May 2017
Accepted: 4 April 2018
First Online: 10 April 2018
Compliance with ethical standards
:
: All authors declare that they have no conflict of interest.
: Institutional review board (IRB)/Ethics committee approval was obtained (IRB No. S2016-1529-0001) from Asan Medical Center (Seoul, South Korea).
: Institutional review board (IRB)/Ethics committee waived the need for patients’ informed consent based on the retrospective nature of the study.