Table 2:
Body of Evidence Examined According to Study Location
| Study Location | Number of Eligible Studies |
|---|---|
| United States of America | 12 |
| United Kingdom | 9 |
| Netherlands | 4 |
| Canada | 3 |
| Multiple locations | 3 |
| China | 2 |
| Finland | 1 |
| Israel | 1 |
| New Zealand | 1 |
| Total | 36 |
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