1998
January January; 18 (1): 1 - 663	February February; 18 (2): 665 - 1135	March March; 18 (3): 1137 - 1763
April April; 18 (4): 1765 - 2430	May May; 18 (5): 2431 - 3101	June June; 18 (6): 3103 - 3645
July July; 18 (7): 3647 - 4407	August August; 18 (8): 4409 - 4947	September September; 18 (9): 4949 - 5620
October October; 18 (10): 5621 - 6164	November November; 18 (11): 6165 - 6878	December December; 18 (12): 6879 - 7603