1. Department of Pathophysiology, School of Medicine, Collegium Medicum, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
2. Department of Public Health, Epidemiology and Microbiology, School of Medicine, Collegium Medicum, University of Warmia and Mazury in Olsztyn, University Clinical Hospital in Olsztyn, Olsztyn, Poland