1. Parkinson's Disease and Movement Disorders Department, Hygeia Hospital Athens Greece
2. Department of Nutrition and Dietetics Harokopio University Athens Greece
3. Section of Sport Medicine and Biology of Exercise, School of Physical Education and Sport Science National and Kapodistrian University of Athens Athens Greece
4. Lab of Cognitive Neuroscience, School of Psychology Aristotle University of Thessaloniki Thessaloniki Greece
5. School of Medicine University of Thessaly Larissa Greece
6. Athens Association of Alzheimer's Disease and Related Disorders Marousi Greece
7. 1st Department of Neurology Aiginition Hospital, National and Kapodistrian University of Athens Medical School Athens Greece
8. Center of Clinical, Experimental Surgery and Translational Research Biomedical Research Foundation of the Academy of Athens Athens Greece
9. Taub Institute for Research in Alzheimer's Disease and the Aging Brain The Gertrude H. Sergievsky Center, Department of Neurology, Columbia University New York, New York USA
10. School of Medicine European University of Cyprus Nicosia Cyprus