Can α-synuclein oligomers in skin biopsies predict the worsening of cognition in Parkinson's disease? A single-center longitudinal cohort study. - Contaldi, E.; Mazzetti, S.; Basellini, M.; Colombo, A.; Cereda, V.; Ferri, V.; Isaias, I.U.; Calandrella, D.; Cappelletti, G.; Pezzoli, G. (Parkinsonism & Related Disorders, 2024)