[1] King Fahad Med City, Prince Salman Heart Ctr, Dept Cardiovasc Dis, Riyadh, Saudi Arabia
[2] Mayo Clin Arizona, Div Cardiovasc Dis, Scottsdale, AZ 85259 USA
[3] Univ Calgary, Pediat Cardiol Sect, Calgary, AB, Canada
[4] King Fahad Med City, Dept Radiol, Prince Salman Heart Ctr, Riyadh, Saudi Arabia
[5] Univ Calgary, Div Cardiovasc Dis, Calgary, AB, Canada