1. Department of General Surgery, Cerrahpasa School of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
2. Department of General Surgery, Balikesir Ataturk City Hospital, Balikesir, Turkey
3. Department of Radiology, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Turkey
4. Department of Pathology, Cerrahpasa School of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey.