Two errors occurred in the article, "Guidelines for Total Parenteral Nutrition," published in the June 26 issue (220:1721-1729). In column 3 on page 1728, the last sentence in the next to the last paragraph should read: "If this is a real factor, it may be desirable to provide more magnesium," not "If this is a renal factor. ..."
The second error is in Table 4 on page 1726. In the last line, the suggested approximate daily intravenous requirement for manganese in adults should be 1-2 mg, not 1-2μg.