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4269 Studies found for: headache NOT migraine

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Map Legend
Region Name Number of Studies
World 4,269
Africa [map] 255
Central America [map] 95
East Asia [map] 517
Japan 93 [studies]
Europe [map] 1,205
Middle East [map] 274
North America 1,737
Canada [map] 320 [studies]
Mexico 94 [studies]
United States [map] 1,529 [studies]
North Asia [map] 136
Pacifica [map] 141
South America [map] 205
South Asia [map] 140
Southeast Asia [map] 181

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