The reason why we, the authors, want to make a change is that this paper was partially supported by the funding of a research project at Honam University. The project ends this February, and already nearly USD $10000 has been received for this research. However, during preparation of this paper, the authors unintentionally omitted an acknowledgement (ACK) to the above project and must return the money they received if there is no ACK credited in the paper.
We, the authors, wish to make the following correction to our published paper [1]. In the summary, on page 15, the funding should be changed from the following:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No.2019R1G1A1099466).
To the corrected version as follows:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No.2019R1G1A1099466) and by research fund from Honam University, 2019.
The authors would like to apologize for any inconvenience caused to readers by these changes. The changes do not affect the scientific results. The manuscript will be updated, and the original will remain online on the article webpage, with a reference to this correction.
Reference
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