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Table 2 Top 25 collaborating relationships, breast cancer-related items, 1949-2008

From: Breast cancer research output, 1945-2008: a bibliometric and density-equalizing analysis

Rank Country 1 Country 2 No. Publications
1 Canada United States 2,223
2 United Kingdom United States 2,007
3 Germany United States 1,601
4 Italy United States 1,460
5 Japan United States 1,294
6 France United States 1,129
7 China United States 953
8 Netherlands United States 743
9 Sweden United States 740
10 Australia United States 723
11 Germany United Kingdom 719
12 Switzerland United States 668
13 France United Kingdom 639
14 Italy United Kingdom 638
15 Spain United States 559
16 Netherlands United Kingdom 548
17 France Italy 541
18 Israel United States 482
19 Australia United Kingdom 459
20 Germany Netherlands 450
21 France Germany 447
22 Denmark United States 442
23 Germany Switzerland 439
24 Canada United Kingdom 437
25 Finland United States 433
  1. No. Publications, the number of items published as a result of cooperation between the two countries listed.