Table 2.
The top 10 countries/regions with the largest number of papers or cooperation intensity worldwide.
| Rank | Countries/regions | Number of publications | Rank | Co-authorship country/region | Total link strength |
|---|---|---|---|---|---|
| 1 | USA | 1110 | 1 | USA | 448 |
| 2 | UK | 499 | 2 | UK | 376 |
| 3 | Canada | 321 | 3 | Canada | 220 |
| 4 | Germany | 273 | 4 | Germany | 217 |
| 5 | Peoples R China | 204 | 5 | Italy | 190 |
| 6 | Netherlands | 186 | 6 | Netherlands | 157 |
| 7 | France | 152 | 7 | Belgium | 129 |
| 8 | Italy | 151 | 7 | France | 129 |
| 9 | Denmark | 143 | 8 | Switzerland | 102 |
| 10 | Australia | 115 | 9 | Peoples R China | 94 |
| 10 | Japan | 115 |