1 Department of Psychiatry, Medical Faculty, University of Cologne, Cologne 50937, Germany; German Center for Neurodegenerative Disorders, Bonn-Cologne, Germany. Electronic address: [email protected].
2 Department of Geriatric Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Germany.
3 Department of Neurology, Second Faculty of Medicine, Charles University and Motol University Hospital, Prague, Czech Republic.
4 Division of Neurogeriatrics, Department of NVS, Karolinska Institutet, Solna, Sweden.
5 Sant Pau Memory Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau, Institut d'Investigació Biomèdica Sant Pau, Facultad de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain; Center of Biomedical Investigation Network for Neurodegenerative Diseases, Madrid, Spain; Barcelona Down Medical Center, Fundació Catalana de Síndrome de Down, Barcelona, Spain.