1999
January January; 89 (1): 2 - 53	February February; 89 (2): 56 - 103	March March; 89 (3): 109 - 162
April April; 89 (4): 163 - 211	May May; 89 (5): 220 - 269	June June; 89 (6): 272 - 328
July July; 89 (7): 331 - 376	August August; 89 (8): 383 - 437	September September; 89 (9): 441 - 493
October October; 89 (10): 495 - 544	November November; 89 (11): 551 - 570