1. Institut National de la Santé et de la Recherche Médicale; U1061 Neuropsychiatry; Montpellier France
2. Faculty of Medicine; University of Montpellier; France
3. Faculty of Medicine; Imperial College London; UK
4. Department of Psychiatry; University of Edinburgh; UK
5. University of California at San Francisco; USA
6. Centre for Health and Ageing (AgeCap); Institute of Neuroscience and Physiology, Sahlgrenska Academy at the University of Gothenburg; Sweden
7. Department of Social Medicine, Psychiatry and Neurology; National and Kapodistrian University of Athens; Greece
8. Taub Institute for Research in Alzheimer's Disease and the Aging Brain, the Gertrude H. Sergievsky Center; Department of Neurology; Columbia University; New York NY USA