1. Division of Nursing, Department of Health Science, Luleå University of Technology, Luleå, Sweden
2. Development Manager, Lapland University of Applied Sciences, Rovaniemi, Finland
3. Clinical Neurochemistry Laboratory, Institute of Neuroscience & Physiology, Sahlgrenska Academy at University of Gothenburg, Sahlgrenska University Hospital, Mölndal, Sweden
4. Division of Medical Sciences, Department of Health Science, Luleå University of Technology, Luleå, Sweden
5. Department of Psychiatry & Neurochemistry, Institute of Neuroscience & Physiology, the Sahlgrenska Academy at the University of Gothenburg & Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden
6. Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, Queen Square & UK Dementia Research Institute at UCL, London, UK