1. From the Turku PET Centre (E.P., M.M., M.N., M.S., L.M.A.); Clinical Neurosciences (E.P., M.N., M.S., L.M.A.), University of Turku; Faculty of Science and Engineering (M.M.), Åbo Akademi University; and Neurocenter (M.S., L.M.A.), Turku University Hospital, Finland.