1Department of Human Genetics, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands
2CAPES Foundation, Ministry of Education of Brazil, Brasília, Brazil
3Department of Clinical Genetics, PEDEGO Research Unit and Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
4Department of Diagnostic Radiology, Oulu University Hospital and Medical Research Center Oulu, Oulu, Finland
5Disability Services, Joint Authority for Kainuu, Kainuu, Finland
6Department of Medical Genetics, University of Helsinki, Helsinki, Finland
7Psychiatric & Neurodevelopmental Genetics Unit, Massachusetts General Hospital, Boston, MA USA
8The Stanley Center for Psychiatric Research, The Broad Institute of MIT and Harvard, Cambridge, MA USA
9Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, Finland
10Analytic and Translational Genetics Unit, Department of Medicine, Massachusetts General Hospital, Boston, MA USA
11Department of Neurology, Massachusetts General Hospital, Boston, MA USA
12Northern Ostrobothnia Hospital District, Center for Intellectual Disability Care, 90220 Oulu, Finland
13Clinic for Children and Adolescents, PEDEGO Research Unit and Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
14Department of Clinical Genetics, Helsinki University Hospital, Helsinki, Finland
15Medical Genetics, IRIBHM, Université Libre de Bruxelles, Brussels, Belgium