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Authors
Lee, Hong Kyu
Kim, Hyoung Soo https://orcid.org/0000-0001-6023-0818
Ha, Sang Ook
Park, Sunghoon
Lee, Hee Sung
Lee, Soo Kyung
Lee, Sun Hee
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Article History
Received: 2 March 2020
Accepted: 29 April 2020
First Online: 24 May 2020
Ethics approval and consent to participate
: Study approval was received from Hallym University Sacred Heart Hospital Institutional Review Board (IRB No. 2019–05–029-001), which waived the requirement for informed consent due to the retrospective design of the study.
: The authors declare that they have no competing interests.
