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10125 Studies found for: every 12 hours AND hours

A similar map is available for all studies in

Click on the map below to show a more detailed map (when available) or search for studies (when map not available).

Map Legend
Region Name Number of Studies
World 10,125
Africa [map] 461
Central America [map] 186
East Asia [map] 1,128
Japan 234 [studies]
Europe [map] 2,948
Middle East [map] 590
North America 4,832
Canada [map] 846 [studies]
Mexico 257 [studies]
United States [map] 4,344 [studies]
North Asia [map] 396
Pacifica [map] 370
South America [map] 548
South Asia [map] 234
Southeast Asia [map] 307

Click on a [map] link to show a map of that region.

Click on a [studies] link to search within your current results for studies in that region. Use the back button to return to this list and try another region.

Studies with no locations are not included in the counts or on the map.

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