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845 Studies found for: during AND pressure AND mask

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Map Legend
Region Name Number of Studies
World 845
Africa [map] 36
Central America [map] 2
East Asia [map] 73
Japan 5 [studies]
Europe [map] 253
Middle East [map] 44
North America 288
Canada [map] 37 [studies]
Mexico 6 [studies]
United States [map] 252 [studies]
North Asia [map] 11
Pacifica [map] 19
South America [map] 45
South Asia [map] 13
Southeast Asia [map] 17

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