1. Department of Cardiovascular Diseases; Prince Salman Heart Center; King Fahad Medical City; Riyadh Saudi Arabia
2. Division of Cardiovascular Diseases; Mayo Clinic Arizona, Scottsdale; Arizona
3. Section of Pediatric Cardiology; University of Calgary; Calgary Alberta Canada
4. Department of Radiology; Prince Salman Heart Center; King Fahad Medical City; Riyadh Saudi Arabia
5. Division of Cardiovascular Diseases; University of Calgary; Calgary Alberta Canada