SYDNEY, Feb. 2 (Xinhua) -- Measuring hair cortisol may help reveal the impact of stress on autistic children, offering a biological tool to complement behavioral assessments, Australian research has found. The study used biological samples from more than 580 autistic children, as well as their non-autistic siblings, and unrelated non-autistic children, aged 2 to 17, said a statement from Neuroscience Research Au
