Han, Ji Yoon
Moon, Chung Joon
Youn, Young Ah
Sung, In Kyung
Lee, In Goo
Article History
Received: 25 August 2017
Accepted: 27 March 2018
First Online: 10 April 2018
Ethic approval and consent to participate
: This study was approved by the Institutional Review Board at St. Mary’s Hospital (No. KC12RAS10602). We obtained access and use for CMC’s database and conducted this study in accordance with Korean legislation. Written consent was not necessary for this study due to its retrospective nature.
: Not applicable.
: The authors declare that they have no competing interests.
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