[1] Dalhousie Univ, Dept Pediat, Halifax, NS, Canada
[2] Dalhousie Univ, IWK Hlth Ctr, Halifax, NS, Canada
[3] Sophia Childrens Univ Hosp, Erasmus Med Ctr, Dept Paediat Neurol, Rotterdam, Netherlands
[4] Univ Groningen, Univ Med Ctr Groningen, Dept Neurol, Groningen, Netherlands
[5] Univ Hosp Lyon HCL, HFME, Epilepsy Sleep & Paediat Neurophysiol Dept, Lyon, France