1. Department of Plastic Surgery St. Petrus Hospital Wuppertal Germany
2. Department of Surgery University of California Irvine California USA
3. Department of Surgery (A), University Hospital of Duesseldorf Heinrich‐Heine University Duesseldorf Duesseldorf Germany
4. Division of Infectious diseases University of Warmia and Mazury Olszytn Poland
5. School of Medicine Wroclaw Medical University Wroclaw Poland
6. Department of Food Hygiene and Consumer Health Protection Wroclaw University of Environmental and Life Sciences Wroclaw Poland
7. Department of Biochemistry and Molecular Biology, Faculty of Veterinary Sciencess Wroclaw University of Environmental and Life Sciences Wroclaw Poland