[1] McGill Univ, Dept Pediat, Montreal Childrens Hosp, Div Newborn Med, Montreal, PQ H3A 2T5, Canada
[2] McGill Univ, Dept Pediat, Montreal Childrens Hosp, Div Pediat Neurol, Montreal, PQ H3A 2T5, Canada
[3] McGill Univ, Montreal Neurol Inst, Montreal, PQ, Canada
[4] McGill Univ, Dept Neurol & Neurosurg, Montreal, PQ, Canada