1. Department of Clinical Neurosciences, Institute of Psychiatry, King's College London, London, UK, Department of Paediatric Neurology, Evelina Children's Hospital, London, UK
2. Department of Epidemiology, Mailman School of Public Health, Columbia University Medical Center, New York, NY, USA
3. Department of Pediatrics, Hasbro Children's Hospital and the Warren Alpert Medical School of Brown University, Providence, RI, USA
4. Department of Clinical Neurosciences, Institute of Psychiatry, King' College London, London, UK, Department of Paediatric Neurology, Evelina Children' Hospital, London, UK, Department of Epidemiology, Mailman School of Public Health, Columbia University Medical Center, New York, NY, USA, Epidemiology Division, Department of Psychiatry, Columbia University Medical Center, New York, NY, USA,