[1] Weill Cornell Med, Med & Genet Med, Doha, Qatar
[2] Royal Hosp, Natl Heart Ctr, Muscat, Oman
[3] Hamad Med Corp, Heart Hosp, Doha, Qatar
[4] King Saud Univ, King Fahad Cardiac Ctr, Dept Cardiac Sci, Riyadh, Saudi Arabia
[5] Mohammed Bin Rashid Univ Med & Hlth Sci, Coll Med, Dubai, U Arab Emirates
[6] Sabah Al Ahmed Cardiac Ctr, Cardiol, Kuwait, Kuwait
[7] UAE, Cleveland Clin Abu Dhabi, Heart & Vasc Inst, Abi Dhabi, U Arab Emirates
[8] Adan Hosp, Dept Cardiol, Kuwait, Kuwait
[9] Dubai Hosp, Dept Cardiol, Dubai, U Arab Emirates
[10] Mohammed Bin Khalifa Cardiac Ctr, Dept Cardiol, Manamah, Manama, Bahrain
[11] Sanaa Univ, Fac Med, Dept Cardiol, Sanaa, Sana, Yemen
[12] Weill Cornell Med, Biostat Core, Doha, Qatar