1. Department of Pharmaceutical Practice and Administrative Sciences, University of New Mexico College of Pharmacy , Albuquerque, New Mexico , USA
2. Department of Medicine, Division of Infectious Diseases and Hospital Epidemiology, University Hospital Basel, University of Basel , Basel , Switzerland
3. Division of Infectious Diseases and Hospital Epidemiology, University Hospital Basel, University of Basel , Basel , Switzerland
4. Departments of Medicine and Clinical Research, University Hospital Basel, University of Basel , Basel , Switzerland
5. Institute of Medical Virology, University of Zurich , Zurich , Switzerland
6. Service of Infectious Diseases, Lausanne University Hospital, University of Lausanne , Lausanne , Switzerland
7. Service of Neurology, Department of Neurosciences, University Hospital Lausanne, University of Lausanne , Lausanne , Switzerland
8. Department of Neuropsychology, Neurology Clinic, University Hospital Zurich , Zurich , Switzerland
9. Department of Infectious Diseases, University Hospital Bern, University of Bern , Bern , Switzerland
10. Department of Neurology, University Hospital Bern, University of Bern , Neurozentrum Bern , Switzerland
11. University Department of Medicine, Kantonsspital Bruderholz, University of Basel , Basel , Switzerland
12. Division of Infectious Diseases, University Hospital Geneva, University of Geneva , Geneva , Switzerland
13. Service of Neurology, University Hospital Geneva, University of Geneva , Geneva , Switzerland
14. Memory Clinic, Felix Platter Hospital University Center for Medicine of Aging , Basel , Switzerland
15. Department of Infectious Diseases and Hospital Epidemiology, Cantonal Hospital St. Gallen , St. Gallen , Switzerland
16. Neuropsychology Unit, Department of Neurology, Cantonal Hospital St. Gallen , St. Gallen , Switzerland
17. Neuropsychology and Speech Therapy Unit, Neurocenter of Southern Switzerland, Regional Hospital Lugano , Lugano , Switzerland
18. Division of Infectious Diseases, Regional Hospital Lugano , Lugano , Switzerland