1. Department of Hematology, Faculty of Medicine, University of Damascus, Damascus, Syria
2. Faculty of Medicine, University of Aleppo, Aleppo, Syria
3. Chromosomes Laboratory, Human Genetics Division, Molecular Biology and Biotechnology Department, Syrian Atomic Energy Commission, Damascus, Syria
4. Department of Gastroenterology, Faculty of Medicine, University of Aleppo, Aleppo, Syria