Algeria   9 studies
Angola   1 study
Benin   6 studies
Botswana   21 studies
Burkina Faso   34 studies
Cameroon   17 studies
Central African Republic   4 studies
Congo   10 studies
Congo, The Democratic Republic of the   3 studies
Côte D'Ivoire   7 studies
Egypt   125 studies
Ethiopia   14 studies
Gabon   19 studies
Gambia   24 studies
Ghana   42 studies
Guinea   3 studies
Guinea-Bissau   26 studies
Kenya   78 studies
Liberia   1 study
Libyan Arab Jamahiriya   1 study
Madagascar   7 studies
Malawi   44 studies
Mali   49 studies
Mauritania   1 study
Mauritius   2 studies
Morocco   36 studies
Mozambique   23 studies
Niger   2 studies
Nigeria   19 studies
Rwanda   8 studies
Réunion   2 studies
Senegal   18 studies
Seychelles   1 study
Sierra Leone   1 study
South Africa   940 studies
Sudan   5 studies
Swaziland   1 study
Tanzania   77 studies
Togo   1 study
Tunisia   65 studies
Uganda   88 studies
Zambia   44 studies
Zimbabwe   18 studies