1. Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
2. Department of Statistics, Faculty of Economics and Statistics, University of Innsbruck, Innsbruck, Austria
3. Centre d’Esclerosi Múltiple de Catalunya, Department of Neurology/Neuroimmunology, Hospital Universitari Vall d’Hebron, Universitat Autónoma de Barcelona, Barcelona, Spain
4. Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
5. Laboratory of Hematology, Sheba Medical Center, Ramat Gan, Israel
6. Department of Neurology, Medical University of Graz, Graz, Austria
7. Department of Laboratory Medicine and Pathology and Department of Neurology, Mayo Clinic, Rochester, MN, USA
8. Neurochemistry Laboratory, Department of Clinical Chemistry, Amsterdam Neuroscience, Vrije Universiteit, Amsterdam UMC, Amsterdam, The Netherlands
9. CSF Laboratory, Department of Neurology, University of Ulm, Ulm, Germany
10. Immunology Department, Hospital Universitario Ramón y Cajal, Madrid, Spain
11. Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
12. Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Mölndal, Sweden/Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden/Department of Neurodegenerative Disease, Queen Square Institute of Neurology, University College London, London, UK/UK Dementia Research Institute, University College London, London, UK/Hong Kong Center for Neurodegenerative Diseases, Hong Kong, China