1. Clinic of Social and Family Medicine, Faculty of Medicine, University of Crete, Heraklion, Greece;
2. Department of Psychiatry, Faculty of Medicine, University of Crete, Heraklion, Greece;
3. Department of Neurology, Faculty of Medicine, University of Crete, Heraklion, Greece;
4. MELEBEV Community Elders Clubs, Research Department, Jerusalem, Israel