Indication of the location of corresponding authors.
| Top Countries/ Regions | Authors | |
|---|---|---|
| 1 | China | 526 |
| 2 | India | 400 |
| 3 | Iran | 57 |
| 4 | Germany | 41 |
| 5 | United States | 38 |
| 6 | Italy | 32 |
| 7 | France | 31 |
| 8 | Spain | 27 |
| 9 | South Korea | 26 |
| 10 | Brazil | 23 |
| 11 | Pakistan | 20 |
| 12 | Greece | 18 |
| 13 | Netherlands | 16 |
| 14 | Turkey | 15 |
| 15 | Czech Republic | 15 |
| 16 | Taiwan | 13 |
| 17 | Canada | 12 |
| 18 | United Kingdom | 12 |
| 19 | Portugal | 12 |
| 20 | Austria | 10 |
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.