2004
January January; 30 (1): 1 - 125	February February; 30 (2): 129 - 248	March March; 30 (3): 251 - 419
April April; 30 (4): 421 - 593	May May; 30 (5): 597 - 758	June June; 30 (6): 761 - 913
July July; 31 (1): 1 - 130	August August; 31 (2): 133 - 255 Supplement: Functional Genomics of Lung Disease : S1 - S81	September September; 31 (3): 257 - 374
October October; 31 (4): 377 - 477	November November; 31 (5): 479 - 582	December December; 31 (6): 585 - 686