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Top 100 most-cited articles according to their geographic origins (with three or more geographic origins)
| Rank | Country | Number* |
|---|---|---|
| 1 | The United States of America | 62 |
| 2 | Italy | 19 |
| 3 | France | 18 |
| 4 | England | 16 |
| 5 | The Netherlands | 10 |
| 6 | Canada | 9 |
| 7 | Switzerland | 9 |
| 8 | Belgium | 7 |
| 9 | Germany | 5 |
| 11 | Australia | 3 |
| 12 | Japan | 3 |
| 13 | Norway | 3 |
| 14 | Scotland | 3 |
| 15 | Spain | 3 |
More than 100 countries are listed in total due to international collaboration in certain publications.
