1. Department of Physiology, Institute of Medical Sciences, University of Opole, 45040 Opole, Poland
2. Student Scientific Society of Physiology, Department of Physiology, Institute of Medical Sciences, University of Opole, 45040 Opole, Poland
3. Department of Pathology, Institute of Medical Sciences, University of Opole, 45040 Opole, Poland
4. Specialist Hospital No. 1, 41900 Bytom, Poland
5. Department of Human Physiology, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, 87100 Torun, Poland