Affiliation: | 1. Department of Neuropsychology, Frenchay Hospital, , Bristol, UK;2. Faculty of Health and Life Sciences, University of the West of England, , Bristol, UK;3. Department of Medicine, University of the Witwatersrand, , Johhannesburg, South Africa;4. Department of Paediatric Oncology, Bristol Royal Hospital for Children, , Bristol, UK;5. Department of Paediatric Neurology, Frenchay Hospital, , Bristol, UK |