Region
Arkansas
2
Australia
1
Brazil
2
California
1
Canada
1
Cook County
1
Cuba
1
Developing countries
4
El Salvador
2
Europe
2
Great Britain
4
Guatemala
1
Illinois
1
India
3
Latin America
1
Michigan
1
Nepal
3
New York
1
New York (State)
1
Pennsylvania
3
Philadelphia
2
Pittsburgh
1
Soviet Union
1
São Paulo (State)
2
Tamil Nadu
1
Tamil Nadu (India)
1
Tennessee
1
United States
54