1. Department of Neurology; San Raffaele Hospital; Milan Italy
2. Department of Neurorehabilitation; San Raffaele Hospital; Milan Italy
3. Microbiology and Virology Research Unit; San Raffaele Hospital; Milan Italy
4. Department of Neurology; IRCCS Ospedale Maggiore Policlinico; Milan Italy
5. Department of Neuroradiology; San Raffaele Hospital; Milan Italy