1. Alzheimer's Disease and Other Cognitive Disorders UnitHospital Clinic i Universitari, IDIBAPS and Barcelona Beta Research CentrePasqual Maragall FoundationBarcelonaSpain
2. Clinical Neurochemistry Laboratory, Department of Psychiatry and NeurochemistryInstitute of Neuroscience and Physiology, The Sahlgrenska Academy at the University of GothenburgMölndalSweden
3. Centre des Maladies Cognitives et Comportementales, Hôpital de la Salpêtrière, AP‐HPInstitute of Brain and Spinal Cord (ICM), UMR‐S975Université Pierre et Marie Curie‐Paris 6ParisFrance
4. Department of Neurology and Memory ClinicHospital Network Antwerp (ZNA)Middelheim and Hoge BeukenAntwerpBelgium
5. Reference Centre for Biological Markers of Dementia (BIODEM)Institute Born‐Bunge, University of AntwerpAntwerpBelgium
6. Department of Psychiatry and PsychotherapyUniversitätsklinikum Erlangen and Friedrich‐Alexander Universität Erlangen‐NürnbergErlangenGermany
7. Centre for Memory Resources and Research (CMRR)Neurobiology Laboratory, GHE, Hôpitaux de LyonUniversité Lyon 1, CNRS UMR5292, INSERM U1028LyonFrance
8. Neurochemistry Laboratory and BiobankDepartment of Clinical Chemistry, VU University Medical CenterAmsterdamThe Netherlands
9. Centre for Memory Disturbances and Alzheimer's Centre, Section of NeurologyUniversity of PerugiaPerugiaItaly