1. MGH/Martinos Center for Biomedical Imaging, Harvard Medical School, Boston, MA, USA
2. Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
3. Service de Génétique Médicale, University of Lausanne, Lausanne, Switzerland
4. CRA Limousin, Limoges, France
5. Gillberg Neuropsychiatry Center, Gothenburg University, Gothenburg, Sweden
6. Section for Speech and Language Pathology, Gothenburg University, Gothenburg, Sweden