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Authors
Koo, Dong-Hoe
Han, Kyung-Do
Kim, Hong Joo
Park, Cheol-Young
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Funding
Funding for this research was provided by:
Kangbuk Samsung Hospital
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Article History
Received: 5 June 2019
Accepted: 8 August 2019
First Online: 16 August 2019
Compliance with ethical standards
:
: The authors have no conflicts of interest to declare.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: An informed consent exemption was granted by the board. All methods were performed in accordance with relevant guidelines and regulations.
