Table 3 Nationality of the research teams and year of first publication from that country. When authors were from multiple nations, the nationality of first author was used
| Country | Year of first publication |
|---|---|
| Canada | 2019 |
| Germany | 2018 |
| Italy | 2009 |
| Japan | 2017 |
| Netherlands | 2020 |
| Singapore | 2018 |
| Spain | 2017 |
| Sri Lanka | 2019 |
| Switzerland | 2016 |
| Turkey | 2019 |
| UK | 2019 |
| USA | 2010 |