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5776 Studies found for: standard AND undergoing

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Map Legend
Region Name Number of Studies
World 5,776
Africa [map] 94
Central America [map] 8
East Asia [map] 281
Japan 20 [studies]
Europe [map] 1,498
Middle East [map] 221
North America 3,047
Canada [map] 481 [studies]
Mexico 20 [studies]
United States [map] 2,649 [studies]
North Asia [map] 45
Pacifica [map] 70
South America [map] 104
South Asia [map] 66
Southeast Asia [map] 77

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Studies with no locations are not included in the counts or on the map.

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