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The top 10 countries related to SA.
| Rank | Publications | Centrality | Country | Percent |
|---|---|---|---|---|
| 1 | 3952 | 0.11 | USA | 39.76% |
| 2 | 987 | 0.06 | Australia | 9.93% |
| 3 | 961 | 0.12 | England | 9.67% |
| 4 | 914 | 0.02 | Peoples R China | 9.20% |
| 5 | 904 | 0.05 | Canada | 9.09% |
| 6 | 867 | 0.09 | Germany | 8.72% |
| 7 | 681 | 0.07 | Netherlands | 6.85% |
| 8 | 352 | 0.13 | Spain | 3.54% |
| 9 | 311 | 0.08 | Italy | 3.13% |
| 10 | 282 | 0.11 | Sweden | 2.84% |
