Region
United States --
18
United States
10
United states --
4
Asia
2
Asia --
2
Asia, Southeastern --
2
East Asia --
2
Europe, Western
2
Europe, Western --
2
Great Britain --
2
Pakistan --
2
Thailand
2
Thailand --
2
Bosnia and Hercegovina --
1
China --
1
Developing countries
1
Europe, Eastern
1
European Union countries
1
European Union countries --
1
Former Yugoslavia --
1
Hiroshima-shi (Japan) --
1
Korea (South)
1
Korea (South) --
1
Nagasaki-shi(Japan) --
1
Pakistan
1
Southeast Asia --
1