1. Department of Hematology , „Carol Davila” University of Medicine and Pharmacy , Emergency University Hospital of Bucharest , Bucharest , Romania
2. Department of Medical Semiology and Nephrology , „Carol Davila” University of Medicine and Pharmacy , Bucharest , Romania
3. Department of Virology , “Stefan S. Nicolau” Institute , Bucharest , Romania
4. Department of Neurology , „Carol Davila” University of Medicine and Pharmacy , Bucharest , Romania