2004
January January; 77 (1): 1 - 383	February February; 77 (2): 385 - 756	March March; 77 (3): 757 - 1135
April April; 77 (4): 1137 - 1506	May May; 77 (5): 1507 - 1880	June June; 77 (6): 1881 - 2264
July July; 78 (1): 1 - 390, e1 - e21	August August; 78 (2): 391 - 758, e22 - e40	September September; 78 (3): 759 - 1134, e41 - e60
October October; 78 (4): 1135 - 1518, e61 - e76	November November; 78 (5): 1519 - 1888, e77 - e86	December December; 78 (6): 1889 - 2231, e87 - e97