Institution: | 1. Department of Medical Biology, Medical Faculty, Medical University, Plovdiv, Bulgaria;2. Technological Center for Emergency 3. Medicine, Plovdiv, Bulgaria;4. Department of Neurosurgery, St. George University Hospital, Plovdiv, Bulgaria;5. University Hospital Pulmed, Plovdiv, Bulgaria;6. Department of General and Clinical Pathology, Medical Faculty, Medical University, Plovdiv, Bulgaria |