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