Indication of the location of corresponding authors.
| Top Countries/ Regions | Authors | |
|---|---|---|
| 1 | China | 232 |
| 2 | United States | 81 |
| 3 | Canada | 53 |
| 4 | Germany | 43 |
| 5 | India | 35 |
| 6 | Iran | 25 |
| 7 | Brazil | 25 |
| 8 | France | 24 |
| 9 | Italy | 23 |
| 10 | Norway | 22 |
| 11 | Spain | 21 |
| 12 | United Kingdom | 20 |
| 13 | South Korea | 18 |
| 14 | Mexico | 17 |
| 15 | Argentina | 15 |
| 16 | Taiwan | 12 |
| 17 | Denmark | 9 |
| 18 | South Africa | 9 |
| 19 | Austria | 8 |
| 20 | Sweden | 8 |
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.