1. Centre for Radiology and Magnetic Resonance Imaging, University Clinical Centre of Serbia, Pasterova No. 2, Belgrade 11000, Serbia
2. Clinic for Digestive Surgery, University Clinical Centre of Serbia, Dr Koste Todorovica No. 6, Belgrade 11000, Serbia
3. Department for Surgery with Anesthesiology, Faculty of Medicine, University of Belgrade, Dr Subotica No. 8, Belgrade 11000, Serbia
4. Department for Radiology, Faculty of Medicine, University of Belgrade, Dr Subotica No. 8, Belgrade 11000, Serbia