1 Department of Health, Ethics and Society, Care and Public Health Research Institute (CAPHRI), Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands.
2 Division of Psychological Medicine and Clinical Neurosciences, Medical Research Council Centre for Neuropsychiatric Genetics and Genomics, Cardiff University, Cardiff, UK.
3 Preventive Neurology Unit, Wolfson Institute of Preventive Medicine, Queen Mary University of London, London, UK.
4 School of Psychology, University of Bath, Bath, UK.
5 Behavioural and Brain Sciences Unit Institute of Child Health, University College London, London, UK.
6 Cambridge Institute for Medical Research, University of Cambridge, Cambridge, UK.
7 Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Faculty of Health, Medicine and Live Sciences, Maastricht University, Maastricht, The Netherlands.
8 Simons Foundation, New York, NY, USA.
9 Departments of Pediatrics and Medicine, Columbia University, New York, NY, USA.
10 Service des Troubles du Spectre de l'Autisme et apparentés, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland.
11 Service de Génétique Médicale, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland.
12 Division of Psychological Medicine and Clinical Neurosciences, Medical Research Council Centre for Neuropsychiatric Genetics and Genomics, Cardiff University, Cardiff, UK. vandenbreemb@cardiff.ac.uk.