Kim, Seung-Kook
Lee, Byoung-Hoi
Song, Moon-Bok
Lee, Su-Chan
Article History
Received: 23 March 2018
Accepted: 28 May 2018
First Online: 4 June 2018
Ethics approval and consent to participate
: Approval for the study was provided by the Institutional Review Board overseeing research at the Himchan Hospital Health System (No. 112294-01-201801-01; date 15 January 2017). Prior to participation, written informed consent was collected from all the participants.
: We received written informed consent from the patients.
: The authors declare that they have no competing interests.
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