1. Department of Radiology, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
2. College of Medicine, AlFaisal University, Riyadh, Saudi Arabia
3. Department of Cell biology and National Biotechnology Center, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
4. King Faisal Heart institute King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia