<qa>  What is the primary objective of this study?The primary objective of this study is to assess the safety, tolerability and efficacy of atomoxetine as determined by the change in the ADHD-RS-IV Total score compared to placebo in the symptomatic treatment of patients diagnosed with Attention-DeficitHyperactivity Disorder by DSM-IV ADHD-NOS criteria occurring as a neuropsychological late-effect of chemotherapy used to treat Acute Lymphocytic Leukemia ALL. 