In the article "Age-Related Modifiers of Clinical Presentation and Health Service Use Among Veterans With Bipolar Disorder" by Sajatovic et al., in the September 2004 issue (pages 1014-1021), the authors reported incorrect percentages for valproate and lithium use on page 1021. The sentence containing the percentages of veterans who used these agents should read as follows: "The agents that were most commonly prescribed for bipolar disorder in the VA Psychosis Registry in FY01 were valproate (37.7 percent of all veterans with bipolar disorder), lithium (25 percent), olanzapine (19.8 percent), risperidone (13.7 percent), carbamazepine (7.5 percent), and quetiapine (7.1 percent)."