Affiliation: | 1.National Center of Infectious and Parasitic Diseases, Sofia, Bulgaria ;2.Central Microbiology Laboratory, University Hospital “Alexandrovska”, Sofia, Bulgaria ;3.Clinic of Neurology, University Hospital “Alexandrovska”, Sofia, Bulgaria ;4.Clinic of Neurology, University Hospital “Tsaritsa Yoanna - ISUL”, Sofia, Bulgaria ;5.Department of Pediatrics, Faculty of Medicine, St. George University Hospital, Medical University - Plovdiv, Plovdiv, Bulgaria ;6.Infectious Diseases Unit, General Hospital, Pazardjik, Bulgaria ; |