Table 1.
Location of the included studies per region.
| Region | Number of studies per region |
|---|---|
| East Asia | 67 |
| Europe (including Turkey) | 35 |
| South Asia | 34 |
| North America | 16 |
| Africa | 17 |
| South America | 15 |
| Middle East | 13 |
| South East Asia | 6 |
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