Indication of the location of corresponding authors.
| Top Countries/ Regions | Authors | |
|---|---|---|
| 1 | China | 1,205 |
| 2 | United States | 476 |
| 3 | Russia | 278 |
| 4 | Italy | 242 |
| 5 | Japan | 153 |
| 6 | Germany | 143 |
| 7 | United Kingdom | 130 |
| 8 | France | 93 |
| 9 | Spain | 89 |
| 10 | Canada | 88 |
| 11 | South Korea | 77 |
| 12 | India | 66 |
| 13 | Australia | 53 |
| 14 | Netherlands | 40 |
| 15 | Iran | 40 |
| 16 | Austria | 21 |
| 17 | Brazil | 20 |
| 18 | Sweden | 15 |
| 19 | Portugal | 14 |
| 20 | Switzerland | 13 |
Our authors submit research articles from all over the world. Authors collaborate frequently with peers at different institutions and in different countries/regions. This graph indicates the number of primary corresponding authors at the country/region level in the last five years.