1 Department of Neurology, Medical Faculty of the RWTH Aachen University, Aachen 52074, Germany.
2 Department of Clinical Neurosciences, Rare Neurological Diseases Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan 20133, Italy.
3 Department of Neuropediatrics and Neuromuscular Centre for Children and Adolescents, Center for Translational Neuro and Behavioral Sciences, University of Duisburg-Essen, Essen 45122, Germany.
4 Department of Neurology, Medical Faculty and University Hospital Düsseldorf, Heinrich Heine University, Düsseldorf 40225, Germany.
5 Department of Neurosciences, Biomedicine, and Movement Sciences, University of Verona, Verona 37134, Italy.
6 Department of Neurology, Neuromuscular Unit, Istanbul Faculty of Medicine, Istanbul University, Istanbul 34093, Turkey.
7 Department of Human Genetics and John P. Hussman Institute for Human Genomics, Dr. John T. Macdonald Foundation, University of Miami, Miller School of Medicine, Miami, FL 33136, USA.
8 Institute of Neuropathology, RWTH Aachen University Hospital, Aachen 52074, Germany.