Attention deficit disorders

Signs of ADHD evident by preschool, expert says

(HealthDay) -- One out of 11 school-aged children is diagnosed with attention-deficit/hyperactivity disorder (ADHD), and up to 40 percent of those kids may display symptoms in preschool, an expert says.

Oncology & Cancer

Leukemia treatment breakthrough for babies

Babies with leukemia could get an array of new treatments after scientists used genetic engineering to reproduce a gene defect found in the disease.

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