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Authors
Zheng, Long
Hwang, Jung-Mo https://orcid.org/0000-0002-0548-8485
Hwang, Deuk-Soo
Kang, Chan
Lee, Jeong-Kil
Park, Young-Cheol
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Article History
Received: 14 August 2019
Accepted: 20 February 2020
First Online: 28 February 2020
Ethics approval and consent to participate
: This study was approved by the ethical committee of Chungnam National University Hospital (CNUH 2018–05-049). All of the participants provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
