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Authors
Park, Yoo Seok
Choi, Yoon Hee
Oh, Je Hyeok http://orcid.org/0000-0002-5211-3838
Cho, In Soo
Cha, Kyoung-Chul
Choi, Byung-Sun
You, Je Sung
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Funding
Funding for this research was provided by:
National Research Foundation of Korea (NRF-2018R1C1B5082969)
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Article History
Received: 6 April 2019
Accepted: 2 July 2019
First Online: 15 July 2019
Ethics approval and consent to participate
: The study design and plan were approved by the institutional review boards (IRB) of each hospital (Approval No. Chung-Ang University Hospital IRB: 1810-010-16212, Yonsei University Health System Severance Hospital IRB: 4-2018-0857, Ewha Womans University Mokdong Hospital IRB: EUMC-2018-11-004, Hanil General Hospital IRB: HGH-2018-OTH-017, Yonsei University Wonju Severance Cristian Hospital IRB: CR318103, and Yonsei University Gangnam Severance Hospital IRB: 3-2018-0298). Written informed consent was waived by the IRB.
: Not applicable.
: The authors declare that they have no competing interests.
