1. Department of Clinical Immunology, Medical University of Bialystok Clinical Hospital, Bialystok, Poland
2. Department of Psychiatry and Neurochemistry, Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden
3. Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden
4. Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
5. Department of Clinical Laboratory Diagnostics, Medical University of Bialystok Clinical Hospital, Bialystok, Poland
6. Department of Cardiosurgery, Medical University of Bialystok Clinical Hospital, Bialystok, Poland
7. Department of Otolaryngology, Medical University of Bialystok Clinical Hospital, Bialystok, Poland
8. Department of Psychiatry and Psychotherapy, Universitätsklinikum Erlangen, and Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
9. Department of Neurodegenerative Disease, UCL Institute of Neurology, London, UK
10. UK Dementia Research Institute at UCL, London, UK
11. Department of Neurodegeneration Diagnostics, Medical University of Bialystok Clinical Hospital, Bialystok, Poland