1. Department of Clinical Chemistry; Wroclaw Medical University; Wroclaw Poland
2. Ludwik Hirszfeld Institute of Immunology and Experimental Therapy; Polish Academy of Science; Wroclaw Poland
3. Department of Social Medicine; Wroclaw Medical University; Wroclaw Poland
4. Department of Clinical Nursing; Wroclaw Medical University; Wroclaw Poland
5. Department of Pharmacology; University of Saskatchewan, College of Medicine; Saskatoon Canada