1. Department of Infectious Microbiology, The Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, Sofia, Bulgaria
2. Laboratory Pathomorphology, Chair “Anatomy, Histology, Pathology and Forensic Medicine,” Medical Faculty, Sofia University "St. Kliment Ohridski," Sofia, Bulgaria
3. Department of Mycology, The Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, Sofia, Bulgaria
4. Chemistry of Natural Products Laboratory, Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Sofia, Bulgaria
5. Department of Biology, Medical Genetics and Microbiology, Medical Faculty, Sofia University "St. Kliment Ohridski," Sofia, Bulgaria