Indication of the location of corresponding authors.
| Top Countries/ Regions | Authors | |
|---|---|---|
| 1 | United States | 227 |
| 2 | Germany | 52 |
| 3 | China | 32 |
| 4 | United Kingdom | 32 |
| 5 | Canada | 23 |
| 6 | France | 23 |
| 7 | Switzerland | 18 |
| 8 | Netherlands | 16 |
| 9 | Sweden | 14 |
| 10 | Australia | 12 |
| 11 | Norway | 9 |
| 12 | Italy | 7 |
| 13 | Singapore | 6 |
| 14 | Spain | 5 |
| 15 | Denmark | 5 |
| 16 | Finland | 4 |
| 17 | Japan | 4 |
| 18 | Austria | 3 |
| 19 | Brazil | 3 |
| 20 | Hong Kong | 3 |
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.