Affiliation: | a Parenting and Special Education Research Group, Katholieke Universiteit Leuven, Andreas Vesaliusstraat 2, P.O. Box 3765, B-3000 Leuven, Belgium b Leuven Autism Research Consortium (LAuRes), Katholieke Universiteit Leuven, Belgium c Psychiatric and Neurodevelopmental Genetics Unit, Massachusetts General Hospital, Cambridge Street, 185, Boston, MA 02114, USA |