Funding for this research was provided by:
National Research Foundation: Competitive Research Project (NRF-CRP10-2012-01)
The Agency for Science, Technology and Research (A*STAR), Singapore and Narodowe Centrum Badań i Rozwoju (NCBR), Poland Joint Grant (R-263-000-C91-305)
DGIST R&D Program of the Ministry of Science and ICT (2020010043)
National Research Foundation of Korea (NRF) grant funded by the Korea government (NRF-2019R1C1C1008344)
Received: 15 September 2020
Accepted: 5 November 2020
First Online: 30 November 2020
Ethics approval and consent to participate
: The manuscript is a review article and this is not applicable.
: All authors consent to publication as an original article.
: The authors declare that they have no competing interests.