1. University of Basel, Centre of Old Age Psychiatry, Psychiatric University Hospital, Basel, Switzerland
2. University of Basel, Geriatric Psychiatry, University Department of Geriatric Medicine FELIX PLATTER, Basel, Switzerland
3. Department of Psychiatry and Psychotherapy, University Hospital of Tübingen, Tübingen, Germany
4. University of Basel, Neuropsychology and Behavioural Neurology Unit, Basel, Switzerland