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1445 Studies found for: subjects AND Double-blind AND Poland

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Map Legend
Region Name Number of Studies
World 1,445
Africa [map] 369
Central America [map] 182
East Asia [map] 598
Japan 278 [studies]
Europe [map] 1,439
Middle East [map] 503
North America 1,176
Canada [map] 760 [studies]
Mexico 416 [studies]
United States [map] 1,117 [studies]
North Asia [map] 807
Pacifica [map] 586
South America [map] 547
South Asia [map] 184
Southeast Asia [map] 278

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