—In the article entitled "Trimethoprim-Sulfamethoxazole Therapy for Nocardia Infections," published in the April Archives (1983;143:711-718), a table title and ratios were given incorrectly. The title for Table 1, page 712, should have been "Nocardia Infections Treated With Trimethoprim-Sulfamethoxazole." In Table 2, on page 713, the third ratio in the column headings should have been 1:19, and the first value under that heading should have been 3.5/66.5. Also in Table 2, the second value under "1.4" should have been 0.5/2.0. On page 715, column 1, the three ratios on lines 1 and 2 should have been 1:2, 1:40, and 1:10, in that order.