1. Department of Health Sciences, University of Milan Bicocca, 20126 Milan, Italy
2. Neurology and Stroke Unit, ASST Grande Ospedale Metropolitano Niguarda, 20162 Milan, Italy
3. Neuroradiology Unit, ASST Grande Ospedale Metropolitano Niguarda, 20162 Milan, Italy
4. Infectious Diseases Unit, ASST Grande Ospedale Metropolitano Niguarda, 20162 Milan, Italy
5. Department of Haematology, ASST Grande Ospedale Metropolitano Niguarda, 20162 Milan, Italy
6. Microbiology Unit, ASST Fatebenefratelli Sacco, 20157 Milan, Italy
7. Clinical Microbiology Unit, ASST Grande Ospedale Metropolitano Niguarda, 20162 Milan, Italy
8. Pathology Unit, ASST Grande Ospedale Metropolitano Niguarda, 20162 Milan, Italy