Song, Ga-Young
Jung, Sung-Hoon
Ahn, Seo-Yeon
Jung, Seung-Yeon
Yang, Deok-Hwan
Ahn, Jae-Sook
Kim, Hyeoung-Joon
Lee, Je-Jung
Article History
Received: 11 August 2018
Accepted: 7 January 2019
First Online: 14 January 2019
Ethics approval and consent to participate
: This retrospective study was approved by the Institutional Ethics Committee of Chonnam National University Hwasun Hospital and was conducted in accordance with the principles of the Declaration of Helsinki.
: Not applicable
: The authors declare that they have no competing interest.
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