1. Clinical Chemistry and Transfusion Medicine , Växjö Central Hospital , Växjö , Sweden
2. Department of Psychiatry and Neurochemistry , Institute of Neuroscience and Physiology, Sahlgrenska Academy at the University of Gothenburg , Gothenburg , Sweden
3. Clinical Neurochemistry Laboratory , Sahlgrenska University Hospital , Mölndal , Sweden
4. Department of Neurodegenerative Disease , UCL Institute of Neurology , London , UK
5. UK Dementia Research Institute at UCL , London , UK
6. Hong Kong Center for Neurodegenerative Diseases , Hong Kong , China
7. Department of Research and Development , Region Kronoberg, Växjö , Sweden
8. Department of Medical Biosciences , Clinical Chemistry, Umeå University , Umeå , Sweden