1. 1st Department of Surgery, 1st Faculty of Medicine Charles University and General University Hospital, 121 08 Prague, Czech Republic
2. Department of Radiodiagnostics, 1st Faculty of Medicine Charles University and General University Hospital, 121 08 Prague, Czech Republic
3. Department of Oncology, 1st Faculty of Medicine Charles University and General University Hospital, 121 08 Prague, Czech Republic
4. 1st Medical Faculty, Charles University, 128 00 Prague, Czech Republic