Siciliano M, De Micco R, Trojano L, Sant’Elia V, Giordano A, Russo A, Passamonti L, Tedeschi G, Chiorri C, Tessitore A. The psychological correlates of fatigue in Parkinson’s disease: Contribution of maladaptive metacognitive beliefs. Parkinsonism Relat Disord, 2021; 91: 135-138