1. Faculty of Medicine, Tartous University, Tartous
2. Division of Colon and Rectal Surgery, Department of Surgery, Mayo Clinic, Rochester, MN
3. Faculty of Medicine, Yarmouk University, Irbid, Jordan
4. Faculty of Medicine
5. Faculty of Medicine, Aleppo University, Aleppo
6. Faculty of Medicine, Kalamoon University
7. Department of Neurology, Damascus University
8. Faculty of Medicine, Tishreen University, Latakia, Syrian Arab Republic
9. Department of Pediatrics, Damascus University Children Hospital, Damascus