1. Department of Paediatric Neurology, The Hospital for Sick Children, Great Ormond Street, London, England
2. Department of Clinical Genetics, The Hospital for Sick Children, Great Ormond Street, London, England
3. Department of Histopathology, The Hospital for Sick Children, Great Ormond Street, London, England
4. Department of Clinical Neurophysiology, The Hospital for Sick Childrne, Great Ormond Street, London, England
5. Department of Radiology The Hospital for Sick Children, Great Ormond Street, London, England