Kwak, Dae-Kyung
Oh, Chul-Young
Lim, Jeong-Seop
Lee, Hyung-Min
Yoo, Je-Hyun http://orcid.org/0000-0002-0777-1575
Article History
Received: 2 May 2019
Accepted: 3 September 2019
First Online: 18 September 2019
Ethics approval and consent to participate
: This study was approved by the institutional review board/Ethics Committee of Hallym University Sacred Heart Hospital (2015-I032) and was conducted in compliance with the guidelines of the Helsinki Declaration of 1975.
: The authors declare that they have no competing interests.