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Study Metric - Number of Sites
| Region | Country | Total Number of Sites |
| Australasia | Australia | 4 |
| | New Zealand | 3 |
| | Total | 7 |
| Europe | Austria | 1 |
| | Belgium | 4 |
| | Czech Republic | 1 |
| | Denmark | 3 |
| | France | 11 |
| | Germany | 16 |
| | Ireland | 1 |
| | Italy | 11 |
| | Netherlands | 4 |
| | Norway | 1 |
| | Poland | 8 |
| | Portugal | 3 |
| | Spain | 13 |
| | Switzerland | 2 |
| | UK | 30 |
| | Total | 109 |
| Latin America | Argentina | 2 |
| | Chile | 1 |
| | Colombia | 2 |
| | Peru | 1 |
| | Total | 6 |
| Northern America | Canada | 9 |
| | USA | 66 |
| | Total | 75 |
| Total | | 197 |
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