1 Department of General, Minimally Invasive and Trauma Surgery, Franiszek Raszeja, Memorial Hospital, Poznań, Poland. Electronic address: [email protected].
2 Medical University of Silesia, Katowice, Poland.
3 Department of General and Oncologic Surgery, St. Joseph Hospital, Mikołów, Poland.
4 Department of General, Gastroenterological and Endocrine Surgery, Wrocław Medical University, Wrocław, Poland.