Table 3. Number of authors.
| Number of authors | #Article |
|---|---|
| 1 | 101 |
| 2 | 135 |
| 3 | 187 |
| 4 | 202 |
| 5 | 155 |
| 6 | 132 |
| 7 | 58 |
| 8 | 33 |
| 9 | 12 |
| 10 | 6 |
| 11 | 1 |
| 12 | 1 |
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