1. Behavioural Genetics Group; MRC Centre for Neuropsychiatric Genetics and Genomics; Neuroscience and Mental Health Research Institute; Cardiff University; Hadyn Ellis Building Cardiff CF24 4HQ UK
2. School of Medicine; Cardiff University; Cardiff UK
3. School of Psychology; Cardiff University; Cardiff UK
4. School of Psychology; University of New South Wales; Sydney NSW Australia
5. Centre for Integrative Physiology; University of Edinburgh; Edinburgh UK
6. School of Biosciences; Cardiff University; Cardiff UK