Table 2 Location of included studies
Continent | Country | Number of studies |
|---|---|---|
Asia | China | 13 |
Israel | 1 | |
South Korea | 2 | |
Australasia | Australia | 1 |
Europe | Denmark | 1 |
Europe | France | 1 |
Spain | 3 | |
Sweden | 1 | |
North America | Canada | 2 |
USA | 2 | |
South America | Brazil | 1 |
Colombia | 1 | |
No location stated | Â | 1 |