[1] Univ Munich, Dr von Hauner Childrens Hosp, Dept Paediat Neurol & Dev Med, D-80337 Munich, Germany
[2] Univ Munich, Inst Social Paediat & Adolescent Med, D-80337 Munich, Germany
[3] Univ Munich, Klinikum Grosshadern, Dept Neurol, D-80337 Munich, Germany
[4] Univ Munich, Univ Hosp Munich, Balance & Ocular Motor Disorders IFBLMU, Integrated Ctr Res & Treatment Vertigo, D-80337 Munich, Germany