1. The Lillie Frank Abercrombie Section of Cardiology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX, USA
2. King Faisal Cardiac Center, King Saud Bin Abdulaziz University, King Abdulaziz Medical City, Jeddah, Saudi Arabia
3. Department of Cardiology, Our Lady’s Children’s Hospital, Crumlin, Dublin, Ireland