1999
January January; 140 (1): 3 - 542	February February; 140 (2): 553 - 1029	March March; 140 (3): 1033 - 1504
April April; 140 (4): 1507 - 1960	May May; 140 (5): 1963 - 2433	June June; 140 (6): 2438 - 2931
July July; 140 (7): 2935 - 3394	August August; 140 (8): 3401 - 3857	September September; 140 (9): 3879 - 4374
October October; 140 (10): 4377 - 4919	November November; 140 (11): 4921 - 5462	December December; 140 (12): 5465 - 6002