2004
January January; 98 (1): 1 - 280	February February; 98 (2): 281 - 562	March March; 98 (3): 563 - 879
April April; 98 (4): 881 - 1195	May May; 98 (5): 1197 - 1506	June June; 98 (6): 1507 - 1872
July July; 99 (1): 2 - 314	August August; 99 (2): 316 - 631	September September; 99 (3): 634 - 958
October October; 99 (4): 959 - 1274	November November; 99 (5): 1276 - 1580	December December; 99 (6): 1582 - 1934