Mechler, Konstantin Screening for ADHD-Related Symptoms in Preschoolers Should Be Considered-Results From a Representative Sample of 5-Year-Olds From a German Metropolitan Region. [electronic resource] - Frontiers in psychiatry 2018 - 612 p. digital Publication Type: Journal Article ISSN: 1664-0640 Standard No.: 10.3389/fpsyt.2018.00612 doi