Kwak, Jae-Man
Jung, Gu-Hee
Article History
Received: 17 January 2017
Accepted: 11 April 2018
First Online: 14 April 2018
Ethics approval and consent to participate
: This study design was approved by the appropriate ethics review boards (KUGH IRB No. 91961-ABG-15-027) and informed consent was provided by all participants.
: The authors declare that they have no competing interests.
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