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Authors
Hwang, Il Yeong
Park, Ki Bong
Chang, Sung Who
Cho, Sung Do
Youm, Yoon Seok https://orcid.org/0000-0003-2091-8065
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Article History
Received: 28 February 2020
Accepted: 25 May 2020
First Online: 11 June 2020
Ethics approval and consent to participate
: This study was approved by the institute of review board of Ulsan University Hospital. (IRB File No. UUH 2014-08-003).
: Not applicable.
: The authors declare that they have no competing interests.
