1993
January January; 55 (1): 1 - 328	February February; 55 (2): 329 - 568	March March; 55 (3): 569 - 814
April April; 55 (4): 815 - 1054	May May; 55 (5): 1055 - 1356	June June; 55 (6): 1357 - 1600
July Supplement: The Acute Cardiovascular Actions of Thyroid Hormone July; 56 (1): 1 - 204	August August; 56 (2): 205 - 402	September September; 56 (3): 403 - 806
October October; 56 (4): 807 - 1006	November November; 56 (5): 1007 - 1220 Supplement: Risk Management and Outcome Analysis in Open Heart Surgery Symposium	December December; 56 (6): 349759 - 349759