Disease Course in Patients Switched from Natalizumab to Alemtuzumab: An Italian Multicenter, Prospective, Observational Study. - Malucchi, Simona; Perini, Paola; Rinaldi, Francesca; Radaelli, Marta; Malentacchi, Maria; Bertolotto, Antonio; Di Sapio, Alessia (Neurology & Therapy, 2025)