1. Maastricht University; School for Mental Health and Neuroscience, Alzheimer Centrum Limburg; Maastricht The Netherlands
2. Department of Psychiatry and Mental Health; Complejo Asistencial de Zamora; Zamora Spain
3. Centre for Research on Ageing, Health and Wellbeing; The Australian National University; Canberra ACT. Australia
4. Department of Public Health and Primary Care; University of Cambridge; Cambridge UK
5. Unité INSERM 897; University of Bordeaux II; Bordeaux France
6. Norwegian Centre for Ageing and Health; Oslo University Hospital, Ullevaal and Vestfold Mental Health Trust; Tønsberg Norway
7. Alzheimer Disease Research Center; Karolinska Institute; Stockholm Sweden
8. Inserm U1061, Montpellier; France and Imperial College; London UK
9. Centre for Cognitive Ageing and Cognitive Epidemiology; University of Edinburgh; Edinburgh UK
10. Departments of Psychiatry, Neurology, Epidemiology and Biostatistics, School of Medicine; University of California; San Francisco CA USA
11. School of Nursing and Human Sciences; Dublin City University; Dublin Ireland