Acknowledgement
This research was supported by a grant from the Basic Science Research Program of the National Resear- ch Foundation of Korea (NRF), funded by the Ministry of Education (NRF-2019R1I1A3A02059471). It was also supported by a grant from the international cooperation program framework managed by the NRF (NRF-2020K2A9A2A08000181). I am also thankful for the "Business Startup Incubator Support Program" supported by the Ministry of Education and the National Research Foundation of Korea.
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