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31163 Studies found for: ( NOT NOTEXT ) [FIRST-RECEIVED-RESULTS-DATE]
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Map Legend
Region Name   Number of Studies
World 31,163  
Africa   [map]   1,147  
Central America   [map]   870  
East Asia   [map]   3,080  
Japan 1,219   [studies]
Europe   [map]   6,842  
Middle East   [map]   1,338  
North America 21,894  
Canada   [map]   3,244   [studies]
Mexico 1,043   [studies]
United States   [map]   20,987   [studies]
North Asia   [map]   1,676  
Pacifica   [map]   1,660  
South America   [map]   1,788  
South Asia   [map]   841  
Southeast Asia   [map]   1,103  

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