1. Department of Cardiology; Sabah Al Ahmed Cardiac Centre; Kuwait City Kuwait
2. Department of Pharmacology & Clinical Pharmacy, College of Medicine & Health Sciences; Sultan Qaboos University; Muscat Oman
3. Gulf Health Research; Muscat Oman
4. Department of Cardiology; Royal Hospital; Muscat Oman
5. Directorate General of Specialized Medical Care; Ministry of Health; Muscat Oman
6. College of Medicine; Mohammed Bin Rashid University of Medicine and Health Sciences; Dubai United Arab Emirates
7. Department of Cardiac Sciences, King Fahad Cardiac Centre; King Saud University; Riyadh Saudi Arabia
8. Department of Adult Cardiology; Hamad Medical Corporation; Doha Qatar
9. Qatar Cardiovascular Research Centre; Doha Qatar
10. Heart and Vascular Institute; Cleveland Clinic, Abu Dhabi; Abu Dhabi United Arab Emirates
11. Department of Adult Cardiology, King Salman Heart Centre; King Fahad Medical City; Riyadh Saudi Arabia
12. Cardiology Department; Tanta University; Tanta Egypt
13. Department of Internal Medicine, Faculty of Medicine; Sana'a University; Sana'a Yemen
14. Division of Cardiology, Al-Dabbous Cardiac Centre; Al Adan Hospital; Kuwait City Kuwait
15. Department of Cardiology; Dubai Hospital; Dubai United Arab Emirates
16. Mohammed Bin Khalifa Cardiac Centre; Manama Bahrain