Kim, Gibbeum
Han, Woojae
Funding for this research was provided by:
National Research Foundation of Korea (NRF-2017R1A1A05001299,HRF-201709-011)
Article History
Received: 3 September 2017
Accepted: 4 April 2018
First Online: 1 May 2018
Ethics approval and consent to participate
: This study did not need institutional research board approval since it did not involve human experimentation and data.
: The authors declare that they have no competing interests.
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