1 Department of General, Minimally Invasive and Endocrine Surgery, Wroclaw Medical University, Wroclaw, Poland. Electronic address: krzysztof.kaliszewski@umw.edu.pl.
2 Department of General, Minimally Invasive and Endocrine Surgery, Wroclaw Medical University, Wroclaw, Poland.
3 Department of Urology and Urological Oncology, Wroclaw Medical University, Wroclaw, Poland.