1. Department of Biochemistry and Cell Biology, Kazimierz Wielki University, 85-671 Bydgoszcz, Poland
2. Department of Neurology, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht University, 3584 CX Utrecht, The Netherlands
3. Department of Genetics, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
4. Department of Neuromuscular Disease, UCL Queen Square Institute of Neurology, The National Hospital for Neurology, London WC1N 3BG, UK
5. Department of Neurology, National Neuroscience Institute, Singapore 308433, Singapore
6. Department of Neuropathology, UCL Queen Square Institute of Neurology, The National Hospital for Neurology, London WC1N 3BG, UK
7. Department of Genetics, University Medical Utrecht, 3584 CX Utrecht, The Netherlands