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Authors
Yoo, Myungeun https://orcid.org/0000-0002-8616-0253
Park, Yoon Ghil https://orcid.org/0000-0001-9054-5300
Cho, Yong Eun https://orcid.org/0000-0001-9815-2720
Lim, Chae Hwan https://orcid.org/0000-0002-1496-3866
Chung, Seok Young https://orcid.org/0000-0003-1484-6771
Kim, Dawoon https://orcid.org/0000-0003-4502-8149
Park, Jinyoung https://orcid.org/0000-0003-4042-9779
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Article History
Received: 16 April 2020
Accepted: 30 December 2020
First Online: 6 February 2021
Compliance with ethical standards
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: None of the authors have potential conflicts of interest to be disclosed.
: All procedures in this study were in accordance with the ethical standards of the Institutional Review Board of Gangnam Severance Hospital with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was waived, because it was retrospective study and does not expose patient-identifiable information.
