1. Department of Clinical and Experimental Medicine Pisa University Pisa Italy
2. Clinical Ageing Research Unit Newcastle University Newcastle upon Tyne UK
3. Department of Neurology University Medical Center Schleswig‐Holstein, Christian‐Albrechts‐University Kiel Germany
4. Institute for Maternal and Child Health IRCCS “Burlo Garofolo” Trieste Italy
5. Institute of Clinical Physiology National Research Council (CNR) Pisa Italy
6. Neurodegenerative Diseases Center, Azienda Ospedaliero Universitaria Pisana Pisa Italy
7. Department of Nuclear Medicine and PET Centre Aarhus University Hospital Aarhus Denmark