Articles submitted by category
| 1995 | 1996 | 1997 | 1998 | 1999 | |
| Original papers | 493 | 415 | 411 | 398 | 453 |
| Case reports | 252 | 247 | 212 | 211 | 149 |
| Short papers | 48 | 51 | 40 | 31 | 36 |
| Editorials/reviews | 38 | 38 | 53 | 81 | 57 |
| Review series | 18 | 31 | 26 | 13 | 19 |
| Supplement articles | 16 | 41 | 29 | 17 | 16 |
| Case report commentaries | 7 | 11 | 7 | 7 | 0 |
| Rapid communications | – | 5 | 5 | 7 | 3 |
| Total | 872 | 839 | 783 | 765 | 733 |