Region
United States --
5
China --
2
Public opinion
2
United States
2
Austria
1
Developing countries
1
Developing countries --
1
Europe
1
Europe --
1
Germany --
1
Great Britain --
1
Korea
1
Korea --
1
Kubalkova Vendulka
1
Mediterranean
1
Pacific Area
1
Pacific Area --
1
Southeast Asia --
1
United states --
1