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42266 Studies found for: during AND before

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Map Legend
Region Name Number of Studies
World [map] 42,266
South America 1,816
Argentina 554 [studies]
Bolivia 8 [studies]
Brazil 1,230 [studies]
Chile 307 [studies]
Colombia 296 [studies]
Ecuador 24 [studies]
French Guiana 3 [studies]
Paraguay 9 [studies]
Peru 226 [studies]
Suriname 1 [studies]
Uruguay 12 [studies]
Venezuela 28 [studies]

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Studies with multiple locations are included in each region containing locations.