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31290 Studies found for: standard AND United States

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Map Legend
Region Name Number of Studies
World [map] 31,290
Africa 474
Algeria 5 [studies]
Botswana 8 [studies]
Congo, The Democratic Republic of the 3 [studies]
Egypt 34 [studies]
Ethiopia 7 [studies]
Gambia 1 [studies]
Ghana 5 [studies]
Guinea 1 [studies]
Kenya 29 [studies]
Lesotho 1 [studies]
Liberia 1 [studies]
Madagascar 2 [studies]
Malawi 11 [studies]
Mali 2 [studies]
Morocco 5 [studies]
Mozambique 3 [studies]
Niger 1 [studies]
Nigeria 13 [studies]
Rwanda 2 [studies]
Senegal 1 [studies]
Sierra Leone 1 [studies]
South Africa 353 [studies]
Swaziland 2 [studies]
Tanzania 7 [studies]
Tunisia 19 [studies]
Uganda 23 [studies]
Zambia 10 [studies]
Zimbabwe 6 [studies]

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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.