1. Department of Neurology and Neurosurgery Children's Clinical University Hospital Riga Latvia
2. Department of Doctoral Studies Riga Stradins University Riga Latvia
3. Scientific Laboratory of Molecular Genetics Riga Stradins University Riga Latvia
4. Department of Psychiatry and Neurochemistry Institute of Neuroscience and Physiology Sahlgrenska Academy University of Gothenburg Mölndal Sweden
5. Clinical Neurochemistry Laboratory Sahlgrenska University Hospital Mölndal Sweden
6. Department of Neurology Riga East Clinical University Hospital Riga Latvia
7. Clinic of Medical Genetics and Prenatal Diagnostics Children's Clinical University Hospital Riga Latvia
8. BIOCON Laboratory Riga Latvia
9. Department of Biology and Microbiology Riga Stradins University Riga Latvia
10. Outpatient Service Centre Pauls Stradins Clinical University Hospital Riga Latvia
11. Department of Neurodegenerative Disease UCL Queen Square Institute of Neurology London UK
12. UK Dementia Research InstituteUCL London UK
13. Rare Disease Centre Riga East Clinical University Hospital Riga Latvia