1995 | 1996 | 1997 | 1998 | 1999 | 2000 | |
---|---|---|---|---|---|---|
Impact factor | 2.13 | 1.96 | 2.31 | 2.86 | 3.44 | |
Original research | ||||||
Full papers | 493 | 415 | 411 | 398 | 453 | 505 |
Short papers | 48 | 51 | 40 | 31 | 36 | 34 |
Rapid communications | – | 5 | 5 | 7 | 3 | 6 |
Case reports | 252 | 247 | 212 | 211 | 149 | 165 |
Editorials/reviews | 38 | 38 | 53 | 81 | 57 | 56 |
Review series | 18 | 31 | 26 | 13 | 19 | 14 |
Supplement articles | 16 | 41 | 29 | 17 | 16 | 46 |
Case report commentaries | 7 | 11 | 7 | 7 | 0 | 0 |
Letters | N/A | 50 | 55 | 72 | 79 | 96 |
Total | 872 | 889 | 838 | 837 | 812 | 922 |