1. Department of Neurology, UMC Utrecht Brain Centre, University Medical Centre Utrecht, Utrecht, the Netherlands
2. Centre of Excellence for Rehabilitation Medicine, UMC Utrecht Brain Centre, University Medical Centre Utrecht, and De Hoogstraat Rehabilitation, Utrecht, the Netherlands
3. Department of Rehabilitation, Physical Therapy Science & Sports, UMC Utrecht Brain Centre, University Medical Centre Utrecht, the Netherlands
4. Biostatistics, GlaxoSmithKline R&D, Stevenage, UK
5. Neurosciences, Takeda Pharmaceuticals, Cambridge, USA
6. Discovery Medicine, GlaxoSmithKline R&D, Upper Providence, USA
7. Clinical Development, Novartis Gene Therapies, Cambridge, UK, and
8. Biostatistics & Research Support, Julius Centre for Health Sciences and Primary Care, University Medical Centre Utrecht, Utrecht, the Netherlands