1. Department of Surgery and Surgical Nursery with a Research Laboratory, Faculty of Medicine and Health Sciences, Jan Kochanowski University, Kielce, Poland
2. Department of Pathology, Faculty of Medicine and Health Sciences, Jan Kochanowski University, Kielce, Poland
3. Department of Molecular Diagnostics, Holy Cross Cancer Centre, Kielce, Poland
4. Department of General, Oncological and Endocrinological Surgery, Voivodeship Hospital, Kielce, Poland
5. Department of Probability Calculus and Statistics, Institute of Mathematics, Jan Kochanowski University, Kielce, Poland