1. Clinical Centre of Serbia, Division of Cardiology, Belgrade, Serbia + University of Belgrade, Faculty of Medicine, Belgrade, Serbia
2. King Fahd Armed Forces Hospital, Pediatric Intensive Care, Jeddah, Kingdom of Saudi Arabia
3. Mayo Clinic College of Medicine, Department of Cardiovascular Diseases, Rochester, Minnesota, United States of America
4. Prince Sultan Cardiac Center, Riyadh, Kingdom of Saudi Arabia
5. Surrey and Sussex NHS Trust, Department of Cardiology, Surrey, United Kingdom
6. King Fahd Armed Forces Hospital, Cardiac Center, Jeddah, Kingdom of Saudi Arabia
7. Saint Louis Heart and Vascular, Saint Louis, Missouri, United States of America
8. nema