Table 1. Focus group participants by country of residence.
| France | 9 | Denmark | 2 |
| UK | 9 | Portugal | 2 |
| Germany | 8 | Slovakia | 2 |
| Italy | 4 | Iceland | 2 |
| Serbia | 3 | Belgium | 1 |
| Netherlands | 3 | Czech Rep | 1 |
| Greece | 2 | Ireland | 1 |
| USA | 2 | Romania | 1 |
| France | 9 | Denmark | 2 |
| UK | 9 | Portugal | 2 |
| Germany | 8 | Slovakia | 2 |
| Italy | 4 | Iceland | 2 |
| Serbia | 3 | Belgium | 1 |
| Netherlands | 3 | Czech Rep | 1 |
| Greece | 2 | Ireland | 1 |
| USA | 2 | Romania | 1 |