Authors
M. Pavlova
Department of Microbiology, National Centre of Infectious and Parasitic Diseases – Sofia, Bulgaria
E. Alexandrova
Department of Microbiology, National Centre of Infectious and Parasitic Diseases – Sofia, Bulgaria
M. Popov
University Hospital “Prof. Iv. Kirov”, Medical University – Sofia, Bulgaria
I. R. Ivanov
University Hospital “Prof. Iv. Kirov”, Medical University – Sofia, Bulgaria