Kang, Sung Il
Kim, Duck-Woo http://orcid.org/0000-0003-1934-9387
Kwak, Yoonjin
Lee, Hye-Seung
Kim, Min Hyun
Kim, Myung Jo
Oh, Heung-Kwon
Kang, Sung-Bum
Article History
Accepted: 14 March 2018
First Online: 28 March 2018
Compliance with ethical standards
: This retrospective study was approved by the Ethics Review Board at our institution (SNUBH IRB No. B-1709-420-110).
: The authors declare that they have no conflicts of interest.