地區
Developing countries
20
Africa
14
Latin America
7
Asia
3
Caucasus, South
3
Europe
3
Europe, Eastern
3
Mexico
3
Africa, Sub-Saharan
2
Sub-Saharan Africa
2
Africa, East
1
Arab countries
1
Brazil
1
Caribbean Area
1
Chile
1
Côte d'Ivoire
1
Côte d'Ivoire
1
Developed countries
1
Eastern Europe
1
Ethiopia
1
Ghana
1
Government policy
1
India
1
Kenya
1
Mozambique
1
South Caucasus
1
Sri Lanka
1
Tanzania, United Republic of
1
Uganda
1
Zambia
1