1. Nutrikon, KCZ Surgical Ward, Krapkowice
2. Department of Vascular Surgery and Angiology Collegium Medium in Bydgoszcz; University Hospital nr 1 Bydgoszcz
3. Epidemiology Department; Oncology Center Institute Gliwice
4. Department of Experimental Surgery and Biomaterials Research
5. Department of Pharmaceutical Microbiology and Parasitology; Wrocław Medical University, Wroclaw
6. Department of Public Health; Silesian Medical University, Bytom
7. Department of Pharmaceutical Microbiology and Parasitology
8. Pharmaceutical Microbiology and Parasitology; Wrocław Medical University, Wroclaw, Poland