1. Norwegian Centre for Mental Disorders Research (NORMENT), Division of Mental Health and Addiction, Oslo University Hospital and University of Oslo , Oslo 0424 , Norway
2. Centre for Age-Related Medicine (SESAM), Stavanger University Hospital , Stavanger 4068 , Norway
3. Faculty of Health Sciences, University of Stavanger , Stavanger 4036 , Norway
4. Semillero de Neurociencias y Envejecimiento, Ageing Institute, Medical School, Pontificia Universidad Javeriana , Bogota 111611 , Colombia
5. Department of Psychology, University of Oslo , Oslo 0373 , Norway
6. AMRA Medical AB , Linköping 58222 , Sweden
7. Department of Health, Medicine and Caring Sciences, Linköping University , Linköping 58183 , Sweden
8. School of Mental Health and Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht University , Maastricht 6200MD , The Netherlands
9. Department of Medical Genetics, Oslo University Hospital , Oslo 0424 , Norway
10. Dr. Joseph Kaufmann Chair in Geriatric Medicine, Department of Medicine and Research Institute of the McGill University Health Centre, McGill University , Montreal, QC H4A 3J1 , Canada
11. Department of Psychological Medicine, Institute of Psychiatry, Psychology, and Neuroscience, King's College London , London WC2R 2LS , UK