1 Department of Neuroscience (DINOGMI), University of Genoa and Neurology Clinics, IRCCS Polyclinic San Martino Hospital, Genoa, Italy. flaviomariano.nobili@hsanmartino.it.
2 Department of Neurology, Medical University of Graz, Graz, Austria.
3 Department of Nuclear Medicine, Autonomous University of Barcelona, Hospital Sant Pau, Barcelona, Spain.
4 LANVIE (Laboratoire de Neuroimagerie du Vieillissement), Department of Psychiatry, University of Geneva, Geneva, Switzerland.