1. Faculty of Medicine, Damascus University, Damascus, (The) Syrian Arab Republic
2. Department of Radiology, Al Assad University Hospital, Damascus University, Damascus, (The) Syrian Arab Republic
3. Department of Pathology, Al Assad University Hospital, Damascus University, Damascus, (The) Syrian Arab Republic
4. Department of Surgery, Al-Mouwasat University Hospital, Damascus University, Damascus, (The) Syrian Arab Republic
5. Department of Surgery, Al Assad University Hospital, Damascus University, Damascus, (The) Syrian Arab Republic