1. Center for Radiology and Magnetic Resonance Imaging, University Clinical Centre of Serbia, Pasterova No. 2, 11000 Belgrade, Serbia
2. Faculty of Medicine, University of Belgrade, Dr Subotica No. 8, 11000 Belgrade, Serbia
3. Departament of Pathology, Clinic for Digestive Surgery, University Clinical Centre of Serbia, Pasterova No. 2, 11000 Belgrade, Serbia
4. Clinic for Digestive Surgery, University Clinical Centre of Serbia, Koste Todorovica Street, No. 6, 11000 Belgrade, Serbia
5. Departament for Radiology, University Children’s Clinic, Tiršova Street, No. 10, 11000 Belgrade, Serbia