1. Infectious Diseases Service, Department of Medicine, Lausanne University Hospital and University of Lausanne, Switzerland;
2. Infectious Diseases Department, Centre Hospitalier Alpes Léman, France;
3. Department of Neurology, University Hospital of Geneva, Switzerland;
4. HIV Unit, Infectious Diseases Division, Department of Medicine, University Hospital of Geneva, Switzerland;
5. Department of Medicine, Kantonsspital Bruderholz, University of Basel, Bruderholz;
6. Department of Neurology, University Hospital Basel, University of Basel, Switzerland;
7. Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Switzerland;
8. Department of Neurology, University Hospital Zurich and University of Zurich, Switzerland;
9. Department of Neurology, Cantonal Hospital, Saint Gallen, Switzerland;
10. Neurocentre of Southern Switzerland, Ente Ospedaliero Cantonale (EOC), Lugano, Switzerland; and
11. Service of Neurology, Department of Clinical Neurosciences, Lausanne University Hospital and University of Lausanne, Switzerland.