[1] SUDept Act, 18 Newbury St, Wantage OX12 8DA, England
[2] John Radcliffe Hosp, NIHR Biomed Res Ctr, Nuffield Dept Clin Neurosci, Oxford Epilepsy Res Grp, Oxford OX3 9DU, England
[3] UCL NIHR BRC Great Ormond St Inst Child Hlth, London, England
[4] Young Epilepsy, St Piers Lane, Dormansland RH7 6P, Lingfield, England
[5] UCL Queen Sq Inst Neurol, Queen Sq, London WC1N 3BG, England
[6] Chalfont Ctr Epilepsy, Gerrards Cross SL9 0RJ, England
[7] Stichting Epilepsie Instellingen Nederland SEIN, Heemstede, Netherlands
[8] Univ Oxford, Univ Dept Psychiat, Oxford, England