1. Department of Cardiology, Saint Michael's Hospital, Toronto University, Toronto, Canada
2. Biostatistics Section, Department of Cardiology, Royal Hospital, Muscat, Oman
3. Cardiovascular Research, Heart Hospital, Hamad Medical Corporation, Doha, Qatar
4. Department of Cardiac Sciences, King Fahad Cardiac Center, King Saud University, Riyadh, Saudi Arabia
5. Adult Cardiology, Heart Hospital, Hamad Medical Corporation, Doha, Qatar
6. Department of Cardiology, Sheikh Khalifa Medical City, Abu Dhabi, United Arab Emirates
7. Department of Cardiology, Sabah Al-Ahmed Cardiac Center, Kuwait City, Kuwait
8. Department of Cardiology, Adan Hospital, Hadiya, Kuwait
9. Department of Cardiology, Dubai Hospital, Dubai, United Arab Emirates
10. Department of Cardiology, Mohammed Bin Khalifa Cardiac Center, Manamah, Bahrain
11. Department of Cardiology, Faculty of Medicine, Sana'a University, Sana'a, Yemen
12. Department of Cardiology and Cardiovascular Surgery, Security Forces Hospital, Riyadh, Saudi Arabia
13. Department of Cardiology, Prince Salman Heart Center, King Fahad Medical City, Saudi Arabia