Looking deeper: does a connection exist between fatigue and attentional deficits in Parkinson's disease? A conceptual framework - Ortelli, Paola; Versace, Viviana; Saltuari, Leopold; Randi, Anna; Stolz, Jakob; Dezi, Sabrina; Maestri, Roberto; Buechner, Susanne; Giladi, Nir; Oliviero, Antonio; Sebastianelli, Luca; Ferrazzoli, Davide (Frontiers in Neurology, 2023)