1. Department of Cardiology and Cardiovascular Surgery, Hamad General Hospital, Doha 3050, Qatar
2. Department of Clinical Medicine, Weill Cornell Medical College, Doha 24144, Qatar
3. Department of Cardiology, King Fahad Cardiac Centre, College of Medicine, King Saud University, Riyadh 11472, Saudi Arabia
4. Faculty of Medicine, Sana’a University, Sana’a, Yemen
5. Department of Cardiology, Saud AllBabtain Cardiac Centre, Dammam 11850, Saudi Arabia
6. Institute of Cardiac Sciences, Sheikh Khalifa Medical City, Abu Dhabi, UAE
7. Department of Cardiology, Royal Hospital, Muscat, Oman
8. Mohammed Bin Khalifa Cardiac Centre, Bahrain
9. Tufts Clinical and Translational Science Institute, Tufts University School of Medicine, Boston, MA 02111, USA
10. Department of Cardiology, Security Forces Hospital, Riyadh, Saudi Arabia