Region
Africa
2
Asia
Asia --
26
Asia, Southeastern
2
Asian --
1
Australia
4
Australia --
4
Developing countries --
2
Europe
2
Great Britain --
1
Oceania
1
Pacific Area
4
Pacific Area --
2
Pacific Islander --
1
Pacific area
2
Singapore
1
Singapore --
1
Sri Lanka
1
Sri Lanka --
1
United States
2
United States --
1