1. Rudd Centre for Adoption Research and Practice School of Psychology University of Sussex Brighton UK
2. Division of Psychological Medicine and Clinical Neurosciences MRC Centre for Neuropsychiatric Genetics and Genomics, School of Medicine Cardiff University CardiffUK
3. Department of Biostatistics and Health InformaticsInstitute of Psychiatry, Psychology and NeuroscienceKing's College London London, UK
4. Social, Genetic and Developmental Psychiatry Centre Institute of Psychiatry, Psychology and Neuroscience King's College London LondonUK