Indication of the location of corresponding authors.
| Top Countries/ Regions | Authors | |
|---|---|---|
| 1 | China | 494 |
| 2 | Japan | 291 |
| 3 | United States | 232 |
| 4 | Russia | 205 |
| 5 | India | 203 |
| 6 | France | 145 |
| 7 | Germany | 145 |
| 8 | Italy | 87 |
| 9 | Poland | 67 |
| 10 | South Africa | 63 |
| 11 | Canada | 52 |
| 12 | Switzerland | 51 |
| 13 | Australia | 45 |
| 14 | Spain | 45 |
| 15 | Ukraine | 45 |
| 16 | Hungary | 44 |
| 17 | Czech Republic | 42 |
| 18 | Sweden | 41 |
| 19 | Belgium | 40 |
| 20 | Iran | 40 |
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.