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Authors
Lee, Kyungjin
Hwang, Soon Jung https://orcid.org/0000-0001-5893-9502
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Article History
Received: 2 September 2019
Accepted: 23 September 2019
First Online: 26 November 2019
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of Seoul National University DentalHospital (CRI12036).
: Not Applicable
: The authors declare that they have no competing interests.
