[1] Univ Basel, Univ Childrens Hosp Basel UKBB, Div Neuropediat & Dev Med, Basel, Switzerland
[2] Gen Hosp Hietzing, Dept Neurol, Neurol Ctr Rosenhugel, Vienna, Austria
[3] Univ Basel, Univ Hosp Basel, Div Neurol, Basel, Switzerland
[4] Kantonsspital Baselland, Div Neurol, Med Univ Clin, Bruderholz, Switzerland
[5] Univ Hosp Basel, Dept Clin Res, Clin Trial Unit, Basel, Switzerland