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Authors
Park, Jae-Young
Chang, Chong Bum https://orcid.org/0000-0002-8597-1054
Kang, Dong-Wan
Oh, Sohee
Kang, Seung-Baik
Lee, Myung Chul
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Article History
Received: 1 November 2018
Accepted: 9 September 2019
First Online: 17 September 2019
Ethics approval and consent to participate
: Ethical approval was obtained from the Seoul National University Boramae Medical Center Institutional Review Board prior to the start of the study. All participants provided informed, written consent.
: Not applicable.
: The authors declare that they have no competing interests.
