Authors
Sławomir Gonkowski
Department of Clinical Physiology, University of Warmia and Mazury, Olsztyn, Poland
Andrzej Rychlik
Department of Clinical Diagnostics, Faculty of Veterinary Medicine, University of Warmia and Mazury, Olsztyn, Poland
Jarosław Całka
Department of Clinical Physiology, University of Warmia and Mazury, Olsztyn, Poland