1. Department of Neurology Amsterdam University Medical Center University of Amsterdam Amsterdam the Netherlands
2. Department of Neurology Radboud University Medical Center Donders Institute for Brain Cognition and Behavior Nijmegen the Netherlands
3. Department of Laboratory Medicine and Pathology University of Washington Seattle Washington USA
4. Kaiser Permanente Washington Health Research Institute Seattle Seattle Washington USA
5. Department of Public and Occupational Health Amsterdam University Medical Center University of Amsterdam Amsterdam the Netherlands