Region
Developing countries
4
Asia
2
Asia --
2
Developing countries --
2
Former Soviet republics --
2
Argentina
1
Argentina --
1
Chile
1
Chile --
1
China
1
China --
1
Communist countries --
1
Europe, Eastern
1
Europe, Eastern --
1
Ghana
1
Ghana --
1
Indonesia
1
Indonesia --
1
Kenya
1
Kenya --
1
Latin America
1
Latin America --
1
Malaysia
1
Malaysia - --
1
Malaysia --
1
Russia (Federation)
1
Russia (Federation) --
1
United States
1
United States --
1