1. Alzheimer's Disease and Other Cognitive Disorders Unit, Neurology Service, Hospital Clínic, Barcelona, Spain
2. Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Spain
3. BarcelonaBeta Brain Research Centre, Pasqual Maragall Foundation, Barcelona, Spain
4. Alzheimer Institute, Research and Resource Memory Centre, AP-HP, Pitié-Salpêtrière Hospital, Paris, France
5. Neurology Department, University of Bonn, Germany
6. Neurology Department, Hospital Sant Pau, Barcelona, CIBERNED, Spain
7. Reference Centre for Biological Markers of Dementia (BIODEM), University of Antwerp, Antwerp, Belgium
8. CRC-Mar, Hospital del Mar, CRC Corporació Sanitària, Barcelona, Spain
9. Department of Psychiatry, University of Bonn, Bonn, Germany
10. Department of Metabolic Biochemistry, AP-HP, Pitiá-Salpêtrière Hospital, Paris, France