1 Neuromuscular Reference Centre, Department of Neurology, Antwerp University Hospital, Antwerpen, Belgium.
2 Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerpen, Antwerp, Belgium.
3 Laboratory of Neuromuscular Pathology, Institute Born-Bunge, University of Antwerp, Antwerpen, Belgium.
4 Dr. John T. Macdonald Foundation, Department of Human Genetics and John P. Hussman Institute for Human Genomics, University of Miami, Miller School of Medicine, Miami, FL.
5 Cerebral Palsy Reference Centre, University Hospitals Leuven, Department of Development and Regeneration, KU Leuven, Leuven, Belgium.