Trajectories in Symptoms of Autism and Cognitive Ability in Autism From Childhood to Adult Life: Findings From a Longitudinal Epidemiological Cohort. - Simonoff, Emily; Kent, Rachel; Stringer, Dominic; Lord, Catherine; Briskman, Jackie; Lukito, Steve; Pickles, Andrew; Charman, Tony; Baird, Gillian (Journal of the American Academy of Child & Adolescent Psychiatry, 2020)