1989
January January; 47 (1): 1 - 178	February February; 47 (2): 179 - 332	March March; 47 (3): 333 - 486
April April; 47 (4): 487 - 640	May May; 47 (5): 641 - 794	June June; 47 (6): 795 - 980
July July; 48 (1): 1 - 158	August August; 48 (2): 159 - 316	September September; 48 (3): 317 - 462 Supplement: Proceedings of World Congress on Heart Valve Replacement
October October; 48 (4): 463 - 610	November November; 48 (5): 611 - 748	December December; 48 (6): 749 - 927