1. Department of Neuropsychiatry, Skaraborg Central Hospital, Falköping, Sweden
2. Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
3. Department of Endocrinology, Skaraborg Central Hospital, Skövde, Sweden
4. Department of Biomedical Sciences, Reference Center for Biological Markers of Dementia, Institute Born-Bunge, University of Antwerp, Antwerp, Belgium
5. Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at University of Gothenburg, Mölndal, Sweden
6. Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden
7. Department of Molecular Neuroscience, UCL Institute of Neurology, Queen Square, London, UK