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34391 Studies found for: standard AND United States

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Map Legend
Region Name Number of Studies
World [map] 34,391
Africa 514
Algeria 5 [studies]
Benin 1 [studies]
Botswana 9 [studies]
Burkina Faso 1 [studies]
Congo, The Democratic Republic of the 3 [studies]
Egypt 35 [studies]
Ethiopia 7 [studies]
Gambia 1 [studies]
Ghana 6 [studies]
Guinea 1 [studies]
Kenya 31 [studies]
Lesotho 1 [studies]
Liberia 1 [studies]
Madagascar 2 [studies]
Malawi 11 [studies]
Mali 2 [studies]
Morocco 6 [studies]
Mozambique 3 [studies]
Niger 1 [studies]
Nigeria 13 [studies]
Rwanda 2 [studies]
Senegal 1 [studies]
Sierra Leone 1 [studies]
South Africa 383 [studies]
Swaziland 2 [studies]
Tanzania 7 [studies]
Tunisia 20 [studies]
Uganda 28 [studies]
Zambia 14 [studies]
Zimbabwe 7 [studies]

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.