1. Department of Psychiatry and Behavioral Sciences, University of Washington School of Medicine, and Seattle Children’s Research Institute, Seattle (Sibley); Department of Psychiatry and Behavioral Health, Ohio State University, and Nisonger Center, Columbus (Arnold); Child Development Center, School of Medicine, University of California, Irvine (Swanson); Division of Child Psychiatry, McGill University, and Montreal Children’s Hospital, Montreal (Hechtman); Department of Psychiatry, University of...