1. Department of Neurology, Rudolf Magnus Brain Centre, University Medical Centre Utrecht, Utrecht, the Netherlands
2. Division of Human Nutrition, Wageningen University, Wageningen, the Netherlands
3. Department of Neurology, Amsterdam Medical Centre, University of Amsterdam, Amsterdam, the Netherlands
4. Department of Neurology, Donders Institute for Brain, Cognition, and Behaviour, Centre for Neuroscience, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands