1. Division of Neurogeriatrics, Department of Neurobiology, Care Sciences and Society, Center for Alzheimer Research, Karolinska Institutet, 171 64 Solna, Sweden
2. Univ. Bordeaux, CNRS, Interdisciplinary Institute for Neuroscience, IINS, UMR 5297, F-33000 Bordeaux, France
3. Karolinska University Hospital, Theme Aging, 141 86 Huddinge, Sweden
4. Knoebel Institute for Healthy Aging, University of Denver, Denver 80208, CO, USA