1. ; Neurological Department; Neurological Hospital Rosenhügel; Vienna Austria
2. Ludwig Boltzmann Institute for Epilepsy and Neuromuscular Disorders; Vienna Austria
3. ; Institute of Clinical Neurology; University of Vienna; Vienna Austria
4. ; Neuromuscular Department, Anatomical Institute; University of Vienna; Vienna Austria
5. Institute of Clinical Chemistry; Molecular Diagnostics and Mitochondrial Genetics; Munich Germany