Region
Developing countries
3
Asia
2
Asia --
2
Developing countries --
2
Asia, Southeastern
1
Asia, Southeastern --
1
Bangladesh
1
Bangladesh --
1
Caribbean Area --
1
Caribbran Area
1
China
1
China --
1
Communist countries --
1
El Salvador
1
El Salvador --
1
Europe, Eastern
1
Europe, Eastern --
1
Former Soviet republics --
1
Indonesia
1
Indonesia --
1
Japan
1
Japan --
1
Nigeria
1
Nigeria --
1
Poland
1
Poland --
1
Russia (Federation)
1
Russia (Federation) --
1