1999
January January; 18 (1): 2 - 93 January; 18 (2): 96 - 195	February February; 18 (3): 198 - 288	March March; 18 (4): 290 - 387 March; 18 (5): 390 - 484
April April; 18 (6): 487 - 590	May May; 18 (7): 592 - 682 May; 18 (8): 684 - 774	June June; 18 (9): 776 - 872
July July; 18 (10): 875 - 965 July; 18 (11): 968 - 1057	August August; 18 (12): 1061 - 1169	September September; 18 (13): 1173 - 1266 September; 18 (14): 1268 - 1357
October October; 18 (15): 1360 - 1448	November November; 18 (16): 1450 - 1543 November; 18 (17): 1546 - 1644	December December; 18 (18): 1646 - 1738