1. Department of Microbiology and Immunology, Medical University of Silesia, 41-808 Zabrze, Poland
2. Institute of Organic Chemistry, Centre of Phytochemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
3. Department of Microbiology and Immunology, Biosciences Institute, UNESP, 18618-000 Botucatu, SP, Brazil
4. Pedagogical University of Krakow, 31-128 Krakow, Poland