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government organization in the United States.
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International composition of the DOPPS
| DOPPS 1 (1996–2001) | DOPPS 2 (2002–04) | DOPPS 3 (2005–08) |
|---|---|---|
| France | Australia and New Zealand | Australia and New Zealand |
| Germany | Belgium | Belgium |
| Italy | Canada | Canada |
| Japan | France | France |
| Spain | Germany | Germany |
| UK | Italy | Italy |
| USA | Japan | Japan |
| Spain | Spain | |
| Sweden | Sweden | |
| UK | UK | |
| USA | USA |
