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33575 Studies found for: Placebo AND placebo effect
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Map Legend
Region Name Number of Studies
World 33,575
Africa [map] 1,195
Central America [map] 548
East Asia [map] 3,496
Japan 789 [studies]
Europe [map] 10,416
Middle East [map] 1,774
North America 15,701
Canada [map] 3,075 [studies]
Mexico 847 [studies]
United States [map] 14,062 [studies]
North Asia [map] 1,239
Pacifica [map] 1,369
South America [map] 1,735
South Asia [map] 779
Southeast Asia [map] 881

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