1. Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia.
2. Department of Genetics, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia.
3. Molecular Genetics Laboratory, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
4. Oncology Cancer Centre, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia.