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Authors
Rhiu, Ilsun
Kim, Wonjoon https://orcid.org/0000-0001-5177-8072
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Article History
Received: 9 April 2019
Accepted: 5 September 2019
First Online: 22 October 2019
Ethics approval and consent to participate
: All participants gave their written informed consent after a complete explanation of this study before participating in the study. The study was performed in accordance with the guidelines of the Declaration of Helsinki and was approved by the ethics committee of the Seoul National University.
: None applicable.
: The authors declare that they have no competing interests.
